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Finding the Fourth Proportional to 66,229.29, 91,398.15 and 36,016.38

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Solution

The fourth proportional to 66,229.29, 91,398.15 and 36,016.38 is: 49,703.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,229.29 : 91,398.15 = 36,016.38 : x
  2. Step 2: Convert to fraction form
    66,229.29/91,398.15 = 36,016.38/x
  3. Step 3: Cross multiply
    66,229.29x = 91,398.15 × 36,016.38
  4. Step 4: Simplify right side
    66,229.29x = 3,291,830,501.70
  5. Step 5: Solve for x
    x = 3,291,830,501.70/66,229.29
  6. Step 6: Final answer
    x = 49,703.55

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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.