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Finding the Fourth Proportional to 135,139.98, 202,713.32 and 64,045.47

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Solution

The fourth proportional to 135,139.98, 202,713.32 and 64,045.47 is: 96,069.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,139.98 : 202,713.32 = 64,045.47 : x
  2. Step 2: Convert to fraction form
    135,139.98/202,713.32 = 64,045.47/x
  3. Step 3: Cross multiply
    135,139.98x = 202,713.32 × 64,045.47
  4. Step 4: Simplify right side
    135,139.98x = 12,982,869,854.66
  5. Step 5: Solve for x
    x = 12,982,869,854.66/135,139.98
  6. Step 6: Final answer
    x = 96,069.79

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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.