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Finding the Fourth Proportional to 112,658.40, 168,996.40 and 50,335.20

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Solution

The fourth proportional to 112,658.40, 168,996.40 and 50,335.20 is: 75,506.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,658.40 : 168,996.40 = 50,335.20 : x
  2. Step 2: Convert to fraction form
    112,658.40/168,996.40 = 50,335.20/x
  3. Step 3: Cross multiply
    112,658.40x = 168,996.40 × 50,335.20
  4. Step 4: Simplify right side
    112,658.40x = 8,506,467,593.28
  5. Step 5: Solve for x
    x = 8,506,467,593.28/112,658.40
  6. Step 6: Final answer
    x = 75,506.73

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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.