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Finding the Fourth Proportional to 136,759.43, 205,230.76 and 48,013.20

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Solution

The fourth proportional to 136,759.43, 205,230.76 and 48,013.20 is: 72,051.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,759.43 : 205,230.76 = 48,013.20 : x
  2. Step 2: Convert to fraction form
    136,759.43/205,230.76 = 48,013.20/x
  3. Step 3: Cross multiply
    136,759.43x = 205,230.76 × 48,013.20
  4. Step 4: Simplify right side
    136,759.43x = 9,853,785,406.00
  5. Step 5: Solve for x
    x = 9,853,785,406.00/136,759.43
  6. Step 6: Final answer
    x = 72,051.96

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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.