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Finding the Fourth Proportional to 1,191,571,741.04, 1,644,384,129.42 and 655,785,095.50

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Solution

The fourth proportional to 1,191,571,741.04, 1,644,384,129.42 and 655,785,095.50 is: 904,991,756.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,571,741.04 : 1,644,384,129.42 = 655,785,095.50 : x
  2. Step 2: Convert to fraction form
    1,191,571,741.04/1,644,384,129.42 = 655,785,095.50/x
  3. Step 3: Cross multiply
    1,191,571,741.04x = 1,644,384,129.42 × 655,785,095.50
  4. Step 4: Simplify right side
    1,191,571,741.04x = 1,078,362,603,350,379,136
  5. Step 5: Solve for x
    x = 1,078,362,603,350,379,136/1,191,571,741.04
  6. Step 6: Final answer
    x = 904,991,756.86

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Double scale
Find fourth proportional to 1,191,571,742.04, 1,644,384,130.80 and 655,785,096.50
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.