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Finding the Fourth Proportional to 136,493.68, 204,781.16 and 98,628.52

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Solution

The fourth proportional to 136,493.68, 204,781.16 and 98,628.52 is: 147,972.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,493.68 : 204,781.16 = 98,628.52 : x
  2. Step 2: Convert to fraction form
    136,493.68/204,781.16 = 98,628.52/x
  3. Step 3: Cross multiply
    136,493.68x = 204,781.16 × 98,628.52
  4. Step 4: Simplify right side
    136,493.68x = 20,197,262,734.68
  5. Step 5: Solve for x
    x = 20,197,262,734.68/136,493.68
  6. Step 6: Final answer
    x = 147,972.15

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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.