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Finding the Fourth Proportional to 1,064.07, 1,593.01 and 786.60

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Solution

The fourth proportional to 1,064.07, 1,593.01 and 786.60 is: 1,177.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064.07 : 1,593.01 = 786.60 : x
  2. Step 2: Convert to fraction form
    1,064.07/1,593.01 = 786.60/x
  3. Step 3: Cross multiply
    1,064.07x = 1,593.01 × 786.60
  4. Step 4: Simplify right side
    1,064.07x = 1,253,061.67
  5. Step 5: Solve for x
    x = 1,253,061.67/1,064.07
  6. Step 6: Final answer
    x = 1,177.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.