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Finding the Fourth Proportional to 69,909.30, 104,863.95 and 41,915.70

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Solution

The fourth proportional to 69,909.30, 104,863.95 and 41,915.70 is: 62,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,909.30 : 104,863.95 = 41,915.70 : x
  2. Step 2: Convert to fraction form
    69,909.30/104,863.95 = 41,915.70/x
  3. Step 3: Cross multiply
    69,909.30x = 104,863.95 × 41,915.70
  4. Step 4: Simplify right side
    69,909.30x = 4,395,445,869.02
  5. Step 5: Solve for x
    x = 4,395,445,869.02/69,909.30
  6. Step 6: Final answer
    x = 62,873.55

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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.