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Finding the Fourth Proportional to 618,783.60, 928,176.20 and 169,508.42

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Solution

The fourth proportional to 618,783.60, 928,176.20 and 169,508.42 is: 254,262.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,783.60 : 928,176.20 = 169,508.42 : x
  2. Step 2: Convert to fraction form
    618,783.60/928,176.20 = 169,508.42/x
  3. Step 3: Cross multiply
    618,783.60x = 928,176.20 × 169,508.42
  4. Step 4: Simplify right side
    618,783.60x = 157,333,681,143.60
  5. Step 5: Solve for x
    x = 157,333,681,143.60/618,783.60
  6. Step 6: Final answer
    x = 254,262.85

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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.