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Finding the Fourth Proportional to 48,515.60, 72,773.40 and 42,100.40

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Solution

The fourth proportional to 48,515.60, 72,773.40 and 42,100.40 is: 63,150.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,515.60 : 72,773.40 = 42,100.40 : x
  2. Step 2: Convert to fraction form
    48,515.60/72,773.40 = 42,100.40/x
  3. Step 3: Cross multiply
    48,515.60x = 72,773.40 × 42,100.40
  4. Step 4: Simplify right side
    48,515.60x = 3,063,789,249.36
  5. Step 5: Solve for x
    x = 3,063,789,249.36/48,515.60
  6. Step 6: Final answer
    x = 63,150.60

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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.