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Finding the Fourth Proportional to 125,449.93, 173,042.15 and 74,426.54

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Solution

The fourth proportional to 125,449.93, 173,042.15 and 74,426.54 is: 102,661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,449.93 : 173,042.15 = 74,426.54 : x
  2. Step 2: Convert to fraction form
    125,449.93/173,042.15 = 74,426.54/x
  3. Step 3: Cross multiply
    125,449.93x = 173,042.15 × 74,426.54
  4. Step 4: Simplify right side
    125,449.93x = 12,878,928,498.66
  5. Step 5: Solve for x
    x = 12,878,928,498.66/125,449.93
  6. Step 6: Final answer
    x = 102,661.90

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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.