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Finding the Fourth Proportional to 65,918.52, 98,876.94 and 15,999

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Solution

The fourth proportional to 65,918.52, 98,876.94 and 15,999 is: 23,998.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,918.52 : 98,876.94 = 15,999 : x
  2. Step 2: Convert to fraction form
    65,918.52/98,876.94 = 15,999/x
  3. Step 3: Cross multiply
    65,918.52x = 98,876.94 × 15,999
  4. Step 4: Simplify right side
    65,918.52x = 1,581,932,163.06
  5. Step 5: Solve for x
    x = 1,581,932,163.06/65,918.52
  6. Step 6: Final answer
    x = 23,998.30

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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.