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Finding the Fourth Proportional to 91,121.76, 136,721.52 and 44,362.08

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Solution

The fourth proportional to 91,121.76, 136,721.52 and 44,362.08 is: 66,562.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,121.76 : 136,721.52 = 44,362.08 : x
  2. Step 2: Convert to fraction form
    91,121.76/136,721.52 = 44,362.08/x
  3. Step 3: Cross multiply
    91,121.76x = 136,721.52 × 44,362.08
  4. Step 4: Simplify right side
    91,121.76x = 6,065,251,007.96
  5. Step 5: Solve for x
    x = 6,065,251,007.96/91,121.76
  6. Step 6: Final answer
    x = 66,562.05

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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.