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Finding the Fourth Proportional to 115,851.40, 173,841.90 and 49,280.20

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Solution

The fourth proportional to 115,851.40, 173,841.90 and 49,280.20 is: 73,947.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,851.40 : 173,841.90 = 49,280.20 : x
  2. Step 2: Convert to fraction form
    115,851.40/173,841.90 = 49,280.20/x
  3. Step 3: Cross multiply
    115,851.40x = 173,841.90 × 49,280.20
  4. Step 4: Simplify right side
    115,851.40x = 8,566,963,600.38
  5. Step 5: Solve for x
    x = 8,566,963,600.38/115,851.40
  6. Step 6: Final answer
    x = 73,947.86

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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.