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Finding the Fourth Proportional to 65,593.55, 90,542.46 and 38,736.16

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Solution

The fourth proportional to 65,593.55, 90,542.46 and 38,736.16 is: 53,469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,593.55 : 90,542.46 = 38,736.16 : x
  2. Step 2: Convert to fraction form
    65,593.55/90,542.46 = 38,736.16/x
  3. Step 3: Cross multiply
    65,593.55x = 90,542.46 × 38,736.16
  4. Step 4: Simplify right side
    65,593.55x = 3,507,267,475.79
  5. Step 5: Solve for x
    x = 3,507,267,475.79/65,593.55
  6. Step 6: Final answer
    x = 53,469.70

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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.