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Finding the Fourth Proportional to 74,882.48, 103,355.19 and 49,393.40

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Solution

The fourth proportional to 74,882.48, 103,355.19 and 49,393.40 is: 68,174.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,882.48 : 103,355.19 = 49,393.40 : x
  2. Step 2: Convert to fraction form
    74,882.48/103,355.19 = 49,393.40/x
  3. Step 3: Cross multiply
    74,882.48x = 103,355.19 × 49,393.40
  4. Step 4: Simplify right side
    74,882.48x = 5,105,063,724.97
  5. Step 5: Solve for x
    x = 5,105,063,724.97/74,882.48
  6. Step 6: Final answer
    x = 68,174.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.