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Finding the Fourth Proportional to 112,012.90, 168,049.05 and 48,805.90

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Solution

The fourth proportional to 112,012.90, 168,049.05 and 48,805.90 is: 73,221.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,012.90 : 168,049.05 = 48,805.90 : x
  2. Step 2: Convert to fraction form
    112,012.90/168,049.05 = 48,805.90/x
  3. Step 3: Cross multiply
    112,012.90x = 168,049.05 × 48,805.90
  4. Step 4: Simplify right side
    112,012.90x = 8,201,785,129.40
  5. Step 5: Solve for x
    x = 8,201,785,129.40/112,012.90
  6. Step 6: Final answer
    x = 73,221.79

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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.