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Finding the Fourth Proportional to 125,067.68, 172,592.10 and 67,706

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Solution

The fourth proportional to 125,067.68, 172,592.10 and 67,706 is: 93,433.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,067.68 : 172,592.10 = 67,706 : x
  2. Step 2: Convert to fraction form
    125,067.68/172,592.10 = 67,706/x
  3. Step 3: Cross multiply
    125,067.68x = 172,592.10 × 67,706
  4. Step 4: Simplify right side
    125,067.68x = 11,685,520,722.60
  5. Step 5: Solve for x
    x = 11,685,520,722.60/125,067.68
  6. Step 6: Final answer
    x = 93,433.58

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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.