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Finding the Fourth Proportional to 518,793.80, 777,461.70 and 412,359.80

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Solution

The fourth proportional to 518,793.80, 777,461.70 and 412,359.80 is: 617,960.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,793.80 : 777,461.70 = 412,359.80 : x
  2. Step 2: Convert to fraction form
    518,793.80/777,461.70 = 412,359.80/x
  3. Step 3: Cross multiply
    518,793.80x = 777,461.70 × 412,359.80
  4. Step 4: Simplify right side
    518,793.80x = 320,593,951,119.66
  5. Step 5: Solve for x
    x = 320,593,951,119.66/518,793.80
  6. Step 6: Final answer
    x = 617,960.26

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1.5x scale

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.