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Finding the Fourth Proportional to 75,886.60, 113,829.90 and 36,520.60

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Solution

The fourth proportional to 75,886.60, 113,829.90 and 36,520.60 is: 54,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,886.60 : 113,829.90 = 36,520.60 : x
  2. Step 2: Convert to fraction form
    75,886.60/113,829.90 = 36,520.60/x
  3. Step 3: Cross multiply
    75,886.60x = 113,829.90 × 36,520.60
  4. Step 4: Simplify right side
    75,886.60x = 4,157,136,245.94
  5. Step 5: Solve for x
    x = 4,157,136,245.94/75,886.60
  6. Step 6: Final answer
    x = 54,780.90

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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.