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Finding the Fourth Proportional to 59,569.32, 89,355.90 and 28,407.72

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Solution

The fourth proportional to 59,569.32, 89,355.90 and 28,407.72 is: 42,612.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,569.32 : 89,355.90 = 28,407.72 : x
  2. Step 2: Convert to fraction form
    59,569.32/89,355.90 = 28,407.72/x
  3. Step 3: Cross multiply
    59,569.32x = 89,355.90 × 28,407.72
  4. Step 4: Simplify right side
    59,569.32x = 2,538,397,387.55
  5. Step 5: Solve for x
    x = 2,538,397,387.55/59,569.32
  6. Step 6: Final answer
    x = 42,612.50

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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.