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Finding the Fourth Proportional to 125,233.74, 172,821.24 and 68,644.80

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Solution

The fourth proportional to 125,233.74, 172,821.24 and 68,644.80 is: 94,729.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,233.74 : 172,821.24 = 68,644.80 : x
  2. Step 2: Convert to fraction form
    125,233.74/172,821.24 = 68,644.80/x
  3. Step 3: Cross multiply
    125,233.74x = 172,821.24 × 68,644.80
  4. Step 4: Simplify right side
    125,233.74x = 11,863,279,455.55
  5. Step 5: Solve for x
    x = 11,863,279,455.55/125,233.74
  6. Step 6: Final answer
    x = 94,729.10

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1.5x scale

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.