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Finding the Fourth Proportional to 93,607.60, 129,139.74 and 68,057.92

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Solution

The fourth proportional to 93,607.60, 129,139.74 and 68,057.92 is: 93,891.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,607.60 : 129,139.74 = 68,057.92 : x
  2. Step 2: Convert to fraction form
    93,607.60/129,139.74 = 68,057.92/x
  3. Step 3: Cross multiply
    93,607.60x = 129,139.74 × 68,057.92
  4. Step 4: Simplify right side
    93,607.60x = 8,788,982,093.74
  5. Step 5: Solve for x
    x = 8,788,982,093.74/93,607.60
  6. Step 6: Final answer
    x = 93,891.76

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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.