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Finding the Fourth Proportional to 474,721.56, 655,116.60 and 259,874.78

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Solution

The fourth proportional to 474,721.56, 655,116.60 and 259,874.78 is: 358,627.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,721.56 : 655,116.60 = 259,874.78 : x
  2. Step 2: Convert to fraction form
    474,721.56/655,116.60 = 259,874.78/x
  3. Step 3: Cross multiply
    474,721.56x = 655,116.60 × 259,874.78
  4. Step 4: Simplify right side
    474,721.56x = 170,248,279,023.77
  5. Step 5: Solve for x
    x = 170,248,279,023.77/474,721.56
  6. Step 6: Final answer
    x = 358,627.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.