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Finding the Fourth Proportional to 40,513.60, 60,784.80 and 39,073.60

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Solution

The fourth proportional to 40,513.60, 60,784.80 and 39,073.60 is: 58,624.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,513.60 : 60,784.80 = 39,073.60 : x
  2. Step 2: Convert to fraction form
    40,513.60/60,784.80 = 39,073.60/x
  3. Step 3: Cross multiply
    40,513.60x = 60,784.80 × 39,073.60
  4. Step 4: Simplify right side
    40,513.60x = 2,375,080,961.28
  5. Step 5: Solve for x
    x = 2,375,080,961.28/40,513.60
  6. Step 6: Final answer
    x = 58,624.29

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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.