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Finding the Fourth Proportional to 93,558, 129,073.39 and 57,685.74

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Solution

The fourth proportional to 93,558, 129,073.39 and 57,685.74 is: 79,583.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,558 : 129,073.39 = 57,685.74 : x
  2. Step 2: Convert to fraction form
    93,558/129,073.39 = 57,685.74/x
  3. Step 3: Cross multiply
    93,558x = 129,073.39 × 57,685.74
  4. Step 4: Simplify right side
    93,558x = 7,445,694,016.46
  5. Step 5: Solve for x
    x = 7,445,694,016.46/93,558
  6. Step 6: Final answer
    x = 79,583.72

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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.