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Finding the Fourth Proportional to 418,719.76, 625,243.42 and 332,361.74

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Solution

The fourth proportional to 418,719.76, 625,243.42 and 332,361.74 is: 496,291.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,719.76 : 625,243.42 = 332,361.74 : x
  2. Step 2: Convert to fraction form
    418,719.76/625,243.42 = 332,361.74/x
  3. Step 3: Cross multiply
    418,719.76x = 625,243.42 × 332,361.74
  4. Step 4: Simplify right side
    418,719.76x = 207,806,990,994.75
  5. Step 5: Solve for x
    x = 207,806,990,994.75/418,719.76
  6. Step 6: Final answer
    x = 496,291.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.