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Finding the Fourth Proportional to 91,906.60, 137,876.10 and 32,776.60

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Solution

The fourth proportional to 91,906.60, 137,876.10 and 32,776.60 is: 49,170.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,906.60 : 137,876.10 = 32,776.60 : x
  2. Step 2: Convert to fraction form
    91,906.60/137,876.10 = 32,776.60/x
  3. Step 3: Cross multiply
    91,906.60x = 137,876.10 × 32,776.60
  4. Step 4: Simplify right side
    91,906.60x = 4,519,109,779.26
  5. Step 5: Solve for x
    x = 4,519,109,779.26/91,906.60
  6. Step 6: Final answer
    x = 49,170.68

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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.