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Finding the Fourth Proportional to 171,385.92, 257,091.12 and 53,042.04

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Solution

The fourth proportional to 171,385.92, 257,091.12 and 53,042.04 is: 79,566.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,385.92 : 257,091.12 = 53,042.04 : x
  2. Step 2: Convert to fraction form
    171,385.92/257,091.12 = 53,042.04/x
  3. Step 3: Cross multiply
    171,385.92x = 257,091.12 × 53,042.04
  4. Step 4: Simplify right side
    171,385.92x = 13,636,637,470.68
  5. Step 5: Solve for x
    x = 13,636,637,470.68/171,385.92
  6. Step 6: Final answer
    x = 79,566.85

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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.