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Finding the Fourth Proportional to 519,616.92, 717,178.14 and 304,869.72

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Solution

The fourth proportional to 519,616.92, 717,178.14 and 304,869.72 is: 420,782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,616.92 : 717,178.14 = 304,869.72 : x
  2. Step 2: Convert to fraction form
    519,616.92/717,178.14 = 304,869.72/x
  3. Step 3: Cross multiply
    519,616.92x = 717,178.14 × 304,869.72
  4. Step 4: Simplify right side
    519,616.92x = 218,645,898,731.92
  5. Step 5: Solve for x
    x = 218,645,898,731.92/519,616.92
  6. Step 6: Final answer
    x = 420,782.87

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1.5x scale

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.