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Finding the Fourth Proportional to 555,686.33, 766,847.25 and 326,198.34

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Solution

The fourth proportional to 555,686.33, 766,847.25 and 326,198.34 is: 450,153.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,686.33 : 766,847.25 = 326,198.34 : x
  2. Step 2: Convert to fraction form
    555,686.33/766,847.25 = 326,198.34/x
  3. Step 3: Cross multiply
    555,686.33x = 766,847.25 × 326,198.34
  4. Step 4: Simplify right side
    555,686.33x = 250,144,299,983.57
  5. Step 5: Solve for x
    x = 250,144,299,983.57/555,686.33
  6. Step 6: Final answer
    x = 450,153.78

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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.