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Finding the Fourth Proportional to 115,963.60, 173,815.80 and 49,392.40

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Solution

The fourth proportional to 115,963.60, 173,815.80 and 49,392.40 is: 74,033.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,963.60 : 173,815.80 = 49,392.40 : x
  2. Step 2: Convert to fraction form
    115,963.60/173,815.80 = 49,392.40/x
  3. Step 3: Cross multiply
    115,963.60x = 173,815.80 × 49,392.40
  4. Step 4: Simplify right side
    115,963.60x = 8,585,179,519.92
  5. Step 5: Solve for x
    x = 8,585,179,519.92/115,963.60
  6. Step 6: Final answer
    x = 74,033.40

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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.