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Finding the Fourth Proportional to 104,881.80, 144,713.88 and 68,591.64

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Solution

The fourth proportional to 104,881.80, 144,713.88 and 68,591.64 is: 94,641.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,881.80 : 144,713.88 = 68,591.64 : x
  2. Step 2: Convert to fraction form
    104,881.80/144,713.88 = 68,591.64/x
  3. Step 3: Cross multiply
    104,881.80x = 144,713.88 × 68,591.64
  4. Step 4: Simplify right side
    104,881.80x = 9,926,162,359.96
  5. Step 5: Solve for x
    x = 9,926,162,359.96/104,881.80
  6. Step 6: Final answer
    x = 94,641.42

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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.