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Finding the Fourth Proportional to 115,878.40, 173,836.80 and 49,350.40

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Solution

The fourth proportional to 115,878.40, 173,836.80 and 49,350.40 is: 74,033.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,878.40 : 173,836.80 = 49,350.40 : x
  2. Step 2: Convert to fraction form
    115,878.40/173,836.80 = 49,350.40/x
  3. Step 3: Cross multiply
    115,878.40x = 173,836.80 × 49,350.40
  4. Step 4: Simplify right side
    115,878.40x = 8,578,915,614.72
  5. Step 5: Solve for x
    x = 8,578,915,614.72/115,878.40
  6. Step 6: Final answer
    x = 74,033.78

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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.