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Finding the Fourth Proportional to 361,013.45, 541,603.22 and 121,159.18

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Solution

The fourth proportional to 361,013.45, 541,603.22 and 121,159.18 is: 181,766.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,013.45 : 541,603.22 = 121,159.18 : x
  2. Step 2: Convert to fraction form
    361,013.45/541,603.22 = 121,159.18/x
  3. Step 3: Cross multiply
    361,013.45x = 541,603.22 × 121,159.18
  4. Step 4: Simplify right side
    361,013.45x = 65,620,200,060.76
  5. Step 5: Solve for x
    x = 65,620,200,060.76/361,013.45
  6. Step 6: Final answer
    x = 181,766.64

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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.