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Finding the Fourth Proportional to 577,998.09, 866,209.28 and 278,456.85

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Solution

The fourth proportional to 577,998.09, 866,209.28 and 278,456.85 is: 417,305.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,998.09 : 866,209.28 = 278,456.85 : x
  2. Step 2: Convert to fraction form
    577,998.09/866,209.28 = 278,456.85/x
  3. Step 3: Cross multiply
    577,998.09x = 866,209.28 × 278,456.85
  4. Step 4: Simplify right side
    577,998.09x = 241,201,906,157.28
  5. Step 5: Solve for x
    x = 241,201,906,157.28/577,998.09
  6. Step 6: Final answer
    x = 417,305.71

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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.