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Finding the Fourth Proportional to 98,763.92, 136,293.22 and 53,440.90

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Solution

The fourth proportional to 98,763.92, 136,293.22 and 53,440.90 is: 73,747.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,763.92 : 136,293.22 = 53,440.90 : x
  2. Step 2: Convert to fraction form
    98,763.92/136,293.22 = 53,440.90/x
  3. Step 3: Cross multiply
    98,763.92x = 136,293.22 × 53,440.90
  4. Step 4: Simplify right side
    98,763.92x = 7,283,632,340.70
  5. Step 5: Solve for x
    x = 7,283,632,340.70/98,763.92
  6. Step 6: Final answer
    x = 73,747.91

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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.