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Finding the Fourth Proportional to 866,793.30, 1,300,189.95 and 814,305.30

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Solution

The fourth proportional to 866,793.30, 1,300,189.95 and 814,305.30 is: 1,221,457.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,793.30 : 1,300,189.95 = 814,305.30 : x
  2. Step 2: Convert to fraction form
    866,793.30/1,300,189.95 = 814,305.30/x
  3. Step 3: Cross multiply
    866,793.30x = 1,300,189.95 × 814,305.30
  4. Step 4: Simplify right side
    866,793.30x = 1,058,751,567,291.74
  5. Step 5: Solve for x
    x = 1,058,751,567,291.74/866,793.30
  6. Step 6: Final answer
    x = 1,221,457.95

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Similar ratio
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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.