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Finding the Fourth Proportional to 861,793.51, 1,189,229.47 and 494,251.67

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Solution

The fourth proportional to 861,793.51, 1,189,229.47 and 494,251.67 is: 682,041.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,793.51 : 1,189,229.47 = 494,251.67 : x
  2. Step 2: Convert to fraction form
    861,793.51/1,189,229.47 = 494,251.67/x
  3. Step 3: Cross multiply
    861,793.51x = 1,189,229.47 × 494,251.67
  4. Step 4: Simplify right side
    861,793.51x = 587,778,644,378.94
  5. Step 5: Solve for x
    x = 587,778,644,378.94/861,793.51
  6. Step 6: Final answer
    x = 682,041.16

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.