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Finding the Fourth Proportional to 618,778.74, 928,168.91 and 169,503.56

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Solution

The fourth proportional to 618,778.74, 928,168.91 and 169,503.56 is: 254,255.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,778.74 : 928,168.91 = 169,503.56 : x
  2. Step 2: Convert to fraction form
    618,778.74/928,168.91 = 169,503.56/x
  3. Step 3: Cross multiply
    618,778.74x = 928,168.91 × 169,503.56
  4. Step 4: Simplify right side
    618,778.74x = 157,327,932,518.59
  5. Step 5: Solve for x
    x = 157,327,932,518.59/618,778.74
  6. Step 6: Final answer
    x = 254,255.56

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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.