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Finding the Fourth Proportional to 156,708.96, 216,256.68 and 88,724.04

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Solution

The fourth proportional to 156,708.96, 216,256.68 and 88,724.04 is: 122,438.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,708.96 : 216,256.68 = 88,724.04 : x
  2. Step 2: Convert to fraction form
    156,708.96/216,256.68 = 88,724.04/x
  3. Step 3: Cross multiply
    156,708.96x = 216,256.68 × 88,724.04
  4. Step 4: Simplify right side
    156,708.96x = 19,187,166,326.59
  5. Step 5: Solve for x
    x = 19,187,166,326.59/156,708.96
  6. Step 6: Final answer
    x = 122,438.22

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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.