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Finding the Fourth Proportional to 91,807.20, 137,724.67 and 32,628.80

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Solution

The fourth proportional to 91,807.20, 137,724.67 and 32,628.80 is: 48,948.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,807.20 : 137,724.67 = 32,628.80 : x
  2. Step 2: Convert to fraction form
    91,807.20/137,724.67 = 32,628.80/x
  3. Step 3: Cross multiply
    91,807.20x = 137,724.67 × 32,628.80
  4. Step 4: Simplify right side
    91,807.20x = 4,493,790,712.50
  5. Step 5: Solve for x
    x = 4,493,790,712.50/91,807.20
  6. Step 6: Final answer
    x = 48,948.13

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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.