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Finding the Fourth Proportional to 93,432.87, 129,077.82 and 61,243.88

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Solution

The fourth proportional to 93,432.87, 129,077.82 and 61,243.88 is: 84,608.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,432.87 : 129,077.82 = 61,243.88 : x
  2. Step 2: Convert to fraction form
    93,432.87/129,077.82 = 61,243.88/x
  3. Step 3: Cross multiply
    93,432.87x = 129,077.82 × 61,243.88
  4. Step 4: Simplify right side
    93,432.87x = 7,905,225,873.35
  5. Step 5: Solve for x
    x = 7,905,225,873.35/93,432.87
  6. Step 6: Final answer
    x = 84,608.62

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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.