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Finding the Fourth Proportional to 65,909.30, 98,863.94 and 15,988.59

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Solution

The fourth proportional to 65,909.30, 98,863.94 and 15,988.59 is: 23,982.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,909.30 : 98,863.94 = 15,988.59 : x
  2. Step 2: Convert to fraction form
    65,909.30/98,863.94 = 15,988.59/x
  3. Step 3: Cross multiply
    65,909.30x = 98,863.94 × 15,988.59
  4. Step 4: Simplify right side
    65,909.30x = 1,580,695,042.42
  5. Step 5: Solve for x
    x = 1,580,695,042.42/65,909.30
  6. Step 6: Final answer
    x = 23,982.89

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.