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Finding the Fourth Proportional to 91,678.97, 137,557.97 and 49,588.69

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Solution

The fourth proportional to 91,678.97, 137,557.97 and 49,588.69 is: 74,404.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,678.97 : 137,557.97 = 49,588.69 : x
  2. Step 2: Convert to fraction form
    91,678.97/137,557.97 = 49,588.69/x
  3. Step 3: Cross multiply
    91,678.97x = 137,557.97 × 49,588.69
  4. Step 4: Simplify right side
    91,678.97x = 6,821,319,311.44
  5. Step 5: Solve for x
    x = 6,821,319,311.44/91,678.97
  6. Step 6: Final answer
    x = 74,404.40

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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.