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Finding the Fourth Proportional to 91,449.76, 137,205.36 and 36,015.52

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Solution

The fourth proportional to 91,449.76, 137,205.36 and 36,015.52 is: 54,035.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,449.76 : 137,205.36 = 36,015.52 : x
  2. Step 2: Convert to fraction form
    91,449.76/137,205.36 = 36,015.52/x
  3. Step 3: Cross multiply
    91,449.76x = 137,205.36 × 36,015.52
  4. Step 4: Simplify right side
    91,449.76x = 4,941,522,387.19
  5. Step 5: Solve for x
    x = 4,941,522,387.19/91,449.76
  6. Step 6: Final answer
    x = 54,035.38

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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.