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Finding the Fourth Proportional to 69,398.16, 95,930.87 and 61,918.62

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Solution

The fourth proportional to 69,398.16, 95,930.87 and 61,918.62 is: 85,591.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,398.16 : 95,930.87 = 61,918.62 : x
  2. Step 2: Convert to fraction form
    69,398.16/95,930.87 = 61,918.62/x
  3. Step 3: Cross multiply
    69,398.16x = 95,930.87 × 61,918.62
  4. Step 4: Simplify right side
    69,398.16x = 5,939,906,776.21
  5. Step 5: Solve for x
    x = 5,939,906,776.21/69,398.16
  6. Step 6: Final answer
    x = 85,591.70

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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.