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Finding the Fourth Proportional to 65,918.69, 98,876.99 and 15,999.20

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Solution

The fourth proportional to 65,918.69, 98,876.99 and 15,999.20 is: 23,998.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,918.69 : 98,876.99 = 15,999.20 : x
  2. Step 2: Convert to fraction form
    65,918.69/98,876.99 = 15,999.20/x
  3. Step 3: Cross multiply
    65,918.69x = 98,876.99 × 15,999.20
  4. Step 4: Simplify right side
    65,918.69x = 1,581,952,738.41
  5. Step 5: Solve for x
    x = 1,581,952,738.41/65,918.69
  6. Step 6: Final answer
    x = 23,998.55

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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.