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Finding the Fourth Proportional to 156,436.87, 215,866.89 and 96,010.06

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Solution

The fourth proportional to 156,436.87, 215,866.89 and 96,010.06 is: 132,484.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,436.87 : 215,866.89 = 96,010.06 : x
  2. Step 2: Convert to fraction form
    156,436.87/215,866.89 = 96,010.06/x
  3. Step 3: Cross multiply
    156,436.87x = 215,866.89 × 96,010.06
  4. Step 4: Simplify right side
    156,436.87x = 20,725,391,981.58
  5. Step 5: Solve for x
    x = 20,725,391,981.58/156,436.87
  6. Step 6: Final answer
    x = 132,484.07

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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.