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Finding the Fourth Proportional to 64,425.60, 96,115.28 and 60,938.02

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Solution

The fourth proportional to 64,425.60, 96,115.28 and 60,938.02 is: 90,912.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,425.60 : 96,115.28 = 60,938.02 : x
  2. Step 2: Convert to fraction form
    64,425.60/96,115.28 = 60,938.02/x
  3. Step 3: Cross multiply
    64,425.60x = 96,115.28 × 60,938.02
  4. Step 4: Simplify right side
    64,425.60x = 5,857,074,069.68
  5. Step 5: Solve for x
    x = 5,857,074,069.68/64,425.60
  6. Step 6: Final answer
    x = 90,912.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.