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Finding the Fourth Proportional to 618,015.60, 927,023.40 and 381,819.60

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Solution

The fourth proportional to 618,015.60, 927,023.40 and 381,819.60 is: 572,729.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,015.60 : 927,023.40 = 381,819.60 : x
  2. Step 2: Convert to fraction form
    618,015.60/927,023.40 = 381,819.60/x
  3. Step 3: Cross multiply
    618,015.60x = 927,023.40 × 381,819.60
  4. Step 4: Simplify right side
    618,015.60x = 353,955,703,778.64
  5. Step 5: Solve for x
    x = 353,955,703,778.64/618,015.60
  6. Step 6: Final answer
    x = 572,729.40

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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.