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Finding the Fourth Proportional to 125,703.92, 173,508.19 and 74,752.56

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Solution

The fourth proportional to 125,703.92, 173,508.19 and 74,752.56 is: 103,180.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,703.92 : 173,508.19 = 74,752.56 : x
  2. Step 2: Convert to fraction form
    125,703.92/173,508.19 = 74,752.56/x
  3. Step 3: Cross multiply
    125,703.92x = 173,508.19 × 74,752.56
  4. Step 4: Simplify right side
    125,703.92x = 12,970,181,383.47
  5. Step 5: Solve for x
    x = 12,970,181,383.47/125,703.92
  6. Step 6: Final answer
    x = 103,180.41

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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.