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Finding the Fourth Proportional to 618,778.61, 928,168.70 and 169,503.42

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Solution

The fourth proportional to 618,778.61, 928,168.70 and 169,503.42 is: 254,255.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,778.61 : 928,168.70 = 169,503.42 : x
  2. Step 2: Convert to fraction form
    618,778.61/928,168.70 = 169,503.42/x
  3. Step 3: Cross multiply
    618,778.61x = 928,168.70 × 169,503.42
  4. Step 4: Simplify right side
    618,778.61x = 157,327,768,139.44
  5. Step 5: Solve for x
    x = 157,327,768,139.44/618,778.61
  6. Step 6: Final answer
    x = 254,255.35

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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.