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Finding the Fourth Proportional to 69,293.20, 103,939.80 and 34,301.20

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Solution

The fourth proportional to 69,293.20, 103,939.80 and 34,301.20 is: 51,451.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,293.20 : 103,939.80 = 34,301.20 : x
  2. Step 2: Convert to fraction form
    69,293.20/103,939.80 = 34,301.20/x
  3. Step 3: Cross multiply
    69,293.20x = 103,939.80 × 34,301.20
  4. Step 4: Simplify right side
    69,293.20x = 3,565,259,867.76
  5. Step 5: Solve for x
    x = 3,565,259,867.76/69,293.20
  6. Step 6: Final answer
    x = 51,451.80

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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.