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Finding the Fourth Proportional to 118,089.13, 162,961.65 and 64,372.96

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Solution

The fourth proportional to 118,089.13, 162,961.65 and 64,372.96 is: 88,833.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,089.13 : 162,961.65 = 64,372.96 : x
  2. Step 2: Convert to fraction form
    118,089.13/162,961.65 = 64,372.96/x
  3. Step 3: Cross multiply
    118,089.13x = 162,961.65 × 64,372.96
  4. Step 4: Simplify right side
    118,089.13x = 10,490,323,776.98
  5. Step 5: Solve for x
    x = 10,490,323,776.98/118,089.13
  6. Step 6: Final answer
    x = 88,833.95

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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.