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Finding the Fourth Proportional to 115,153.83, 158,912.60 and 66,765.14

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Solution

The fourth proportional to 115,153.83, 158,912.60 and 66,765.14 is: 92,136.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,153.83 : 158,912.60 = 66,765.14 : x
  2. Step 2: Convert to fraction form
    115,153.83/158,912.60 = 66,765.14/x
  3. Step 3: Cross multiply
    115,153.83x = 158,912.60 × 66,765.14
  4. Step 4: Simplify right side
    115,153.83x = 10,609,820,858.38
  5. Step 5: Solve for x
    x = 10,609,820,858.38/115,153.83
  6. Step 6: Final answer
    x = 92,136.07

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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.