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Finding the Fourth Proportional to 125,163, 172,724.94 and 68,575.68

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Solution

The fourth proportional to 125,163, 172,724.94 and 68,575.68 is: 94,634.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,163 : 172,724.94 = 68,575.68 : x
  2. Step 2: Convert to fraction form
    125,163/172,724.94 = 68,575.68/x
  3. Step 3: Cross multiply
    125,163x = 172,724.94 × 68,575.68
  4. Step 4: Simplify right side
    125,163x = 11,844,730,213.46
  5. Step 5: Solve for x
    x = 11,844,730,213.46/125,163
  6. Step 6: Final answer
    x = 94,634.44

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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.