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Finding the Fourth Proportional to 125,615.62, 173,359.20 and 71,917.48

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Solution

The fourth proportional to 125,615.62, 173,359.20 and 71,917.48 is: 99,251.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,615.62 : 173,359.20 = 71,917.48 : x
  2. Step 2: Convert to fraction form
    125,615.62/173,359.20 = 71,917.48/x
  3. Step 3: Cross multiply
    125,615.62x = 173,359.20 × 71,917.48
  4. Step 4: Simplify right side
    125,615.62x = 12,467,556,798.82
  5. Step 5: Solve for x
    x = 12,467,556,798.82/125,615.62
  6. Step 6: Final answer
    x = 99,251.64

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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.