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Finding the Fourth Proportional to 112,680.78, 169,010.17 and 29,574.78

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Solution

The fourth proportional to 112,680.78, 169,010.17 and 29,574.78 is: 44,359.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,680.78 : 169,010.17 = 29,574.78 : x
  2. Step 2: Convert to fraction form
    112,680.78/169,010.17 = 29,574.78/x
  3. Step 3: Cross multiply
    112,680.78x = 169,010.17 × 29,574.78
  4. Step 4: Simplify right side
    112,680.78x = 4,998,438,595.51
  5. Step 5: Solve for x
    x = 4,998,438,595.51/112,680.78
  6. Step 6: Final answer
    x = 44,359.28

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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.