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Finding the Fourth Proportional to 60,468.96, 90,640.80 and 43,787.28

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Solution

The fourth proportional to 60,468.96, 90,640.80 and 43,787.28 is: 65,635.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,468.96 : 90,640.80 = 43,787.28 : x
  2. Step 2: Convert to fraction form
    60,468.96/90,640.80 = 43,787.28/x
  3. Step 3: Cross multiply
    60,468.96x = 90,640.80 × 43,787.28
  4. Step 4: Simplify right side
    60,468.96x = 3,968,914,089.02
  5. Step 5: Solve for x
    x = 3,968,914,089.02/60,468.96
  6. Step 6: Final answer
    x = 65,635.56

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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.