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Finding the Fourth Proportional to 410,711.20, 615,145.20 and 336,983.20

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Solution

The fourth proportional to 410,711.20, 615,145.20 and 336,983.20 is: 504,718.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,711.20 : 615,145.20 = 336,983.20 : x
  2. Step 2: Convert to fraction form
    410,711.20/615,145.20 = 336,983.20/x
  3. Step 3: Cross multiply
    410,711.20x = 615,145.20 × 336,983.20
  4. Step 4: Simplify right side
    410,711.20x = 207,293,597,960.64
  5. Step 5: Solve for x
    x = 207,293,597,960.64/410,711.20
  6. Step 6: Final answer
    x = 504,718.64

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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.