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Finding the Fourth Proportional to 93,546.70, 140,320.05 and 56,221.90

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Solution

The fourth proportional to 93,546.70, 140,320.05 and 56,221.90 is: 84,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,546.70 : 140,320.05 = 56,221.90 : x
  2. Step 2: Convert to fraction form
    93,546.70/140,320.05 = 56,221.90/x
  3. Step 3: Cross multiply
    93,546.70x = 140,320.05 × 56,221.90
  4. Step 4: Simplify right side
    93,546.70x = 7,889,059,819.10
  5. Step 5: Solve for x
    x = 7,889,059,819.10/93,546.70
  6. Step 6: Final answer
    x = 84,332.85

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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.