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Finding the Fourth Proportional to 69,194.90, 95,488.54 and 38,989.96

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Solution

The fourth proportional to 69,194.90, 95,488.54 and 38,989.96 is: 53,805.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,194.90 : 95,488.54 = 38,989.96 : x
  2. Step 2: Convert to fraction form
    69,194.90/95,488.54 = 38,989.96/x
  3. Step 3: Cross multiply
    69,194.90x = 95,488.54 × 38,989.96
  4. Step 4: Simplify right side
    69,194.90x = 3,723,094,018.86
  5. Step 5: Solve for x
    x = 3,723,094,018.86/69,194.90
  6. Step 6: Final answer
    x = 53,805.90

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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.