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Finding the Fourth Proportional to 68,909.64, 95,079.06 and 39,101.64

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Solution

The fourth proportional to 68,909.64, 95,079.06 and 39,101.64 is: 53,951.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,909.64 : 95,079.06 = 39,101.64 : x
  2. Step 2: Convert to fraction form
    68,909.64/95,079.06 = 39,101.64/x
  3. Step 3: Cross multiply
    68,909.64x = 95,079.06 × 39,101.64
  4. Step 4: Simplify right side
    68,909.64x = 3,717,747,175.66
  5. Step 5: Solve for x
    x = 3,717,747,175.66/68,909.64
  6. Step 6: Final answer
    x = 53,951.05

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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.