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Finding the Fourth Proportional to 485,042.80, 727,564.20 and 366,944.80

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Solution

The fourth proportional to 485,042.80, 727,564.20 and 366,944.80 is: 550,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,042.80 : 727,564.20 = 366,944.80 : x
  2. Step 2: Convert to fraction form
    485,042.80/727,564.20 = 366,944.80/x
  3. Step 3: Cross multiply
    485,042.80x = 727,564.20 × 366,944.80
  4. Step 4: Simplify right side
    485,042.80x = 266,975,899,856.16
  5. Step 5: Solve for x
    x = 266,975,899,856.16/485,042.80
  6. Step 6: Final answer
    x = 550,417.20

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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.