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Finding the Fourth Proportional to 399,352.77, 599,204.77 and 209,769.12

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Solution

The fourth proportional to 399,352.77, 599,204.77 and 209,769.12 is: 314,745.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,352.77 : 599,204.77 = 209,769.12 : x
  2. Step 2: Convert to fraction form
    399,352.77/599,204.77 = 209,769.12/x
  3. Step 3: Cross multiply
    399,352.77x = 599,204.77 × 209,769.12
  4. Step 4: Simplify right side
    399,352.77x = 125,694,656,778.28
  5. Step 5: Solve for x
    x = 125,694,656,778.28/399,352.77
  6. Step 6: Final answer
    x = 314,745.92

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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.