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Finding the Fourth Proportional to 71,589.56, 98,899.71 and 47,118.08

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Solution

The fourth proportional to 71,589.56, 98,899.71 and 47,118.08 is: 65,092.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,589.56 : 98,899.71 = 47,118.08 : x
  2. Step 2: Convert to fraction form
    71,589.56/98,899.71 = 47,118.08/x
  3. Step 3: Cross multiply
    71,589.56x = 98,899.71 × 47,118.08
  4. Step 4: Simplify right side
    71,589.56x = 4,659,964,212.17
  5. Step 5: Solve for x
    x = 4,659,964,212.17/71,589.56
  6. Step 6: Final answer
    x = 65,092.79

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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.