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Finding the Fourth Proportional to 91,343.49, 137,046.25 and 49,227.79

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Solution

The fourth proportional to 91,343.49, 137,046.25 and 49,227.79 is: 73,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,343.49 : 137,046.25 = 49,227.79 : x
  2. Step 2: Convert to fraction form
    91,343.49/137,046.25 = 49,227.79/x
  3. Step 3: Cross multiply
    91,343.49x = 137,046.25 × 49,227.79
  4. Step 4: Simplify right side
    91,343.49x = 6,746,484,015.29
  5. Step 5: Solve for x
    x = 6,746,484,015.29/91,343.49
  6. Step 6: Final answer
    x = 73,858.40

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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.