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Finding the Fourth Proportional to 91,772.56, 137,629.66 and 62,379.28

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Solution

The fourth proportional to 91,772.56, 137,629.66 and 62,379.28 is: 93,549.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,772.56 : 137,629.66 = 62,379.28 : x
  2. Step 2: Convert to fraction form
    91,772.56/137,629.66 = 62,379.28/x
  3. Step 3: Cross multiply
    91,772.56x = 137,629.66 × 62,379.28
  4. Step 4: Simplify right side
    91,772.56x = 8,585,239,097.44
  5. Step 5: Solve for x
    x = 8,585,239,097.44/91,772.56
  6. Step 6: Final answer
    x = 93,549.09

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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.