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Finding the Fourth Proportional to 123,641.91, 170,634.26 and 69,926.90

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Solution

The fourth proportional to 123,641.91, 170,634.26 and 69,926.90 is: 96,503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,641.91 : 170,634.26 = 69,926.90 : x
  2. Step 2: Convert to fraction form
    123,641.91/170,634.26 = 69,926.90/x
  3. Step 3: Cross multiply
    123,641.91x = 170,634.26 × 69,926.90
  4. Step 4: Simplify right side
    123,641.91x = 11,931,924,157.24
  5. Step 5: Solve for x
    x = 11,931,924,157.24/123,641.91
  6. Step 6: Final answer
    x = 96,503.88

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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.