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Finding the Fourth Proportional to 69,060.40, 103,331.40 and 45,732.40

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Solution

The fourth proportional to 69,060.40, 103,331.40 and 45,732.40 is: 68,426.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,060.40 : 103,331.40 = 45,732.40 : x
  2. Step 2: Convert to fraction form
    69,060.40/103,331.40 = 45,732.40/x
  3. Step 3: Cross multiply
    69,060.40x = 103,331.40 × 45,732.40
  4. Step 4: Simplify right side
    69,060.40x = 4,725,592,917.36
  5. Step 5: Solve for x
    x = 4,725,592,917.36/69,060.40
  6. Step 6: Final answer
    x = 68,426.96

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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.