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Finding the Fourth Proportional to 70,042.87, 96,657.24 and 38,211.76

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Solution

The fourth proportional to 70,042.87, 96,657.24 and 38,211.76 is: 52,731.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,042.87 : 96,657.24 = 38,211.76 : x
  2. Step 2: Convert to fraction form
    70,042.87/96,657.24 = 38,211.76/x
  3. Step 3: Cross multiply
    70,042.87x = 96,657.24 × 38,211.76
  4. Step 4: Simplify right side
    70,042.87x = 3,693,443,015.50
  5. Step 5: Solve for x
    x = 3,693,443,015.50/70,042.87
  6. Step 6: Final answer
    x = 52,731.18

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1.5x scale

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.