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Finding the Fourth Proportional to 618,151.20, 928,101.60 and 485,181.60

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Solution

The fourth proportional to 618,151.20, 928,101.60 and 485,181.60 is: 728,459.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,151.20 : 928,101.60 = 485,181.60 : x
  2. Step 2: Convert to fraction form
    618,151.20/928,101.60 = 485,181.60/x
  3. Step 3: Cross multiply
    618,151.20x = 928,101.60 × 485,181.60
  4. Step 4: Simplify right side
    618,151.20x = 450,297,819,250.56
  5. Step 5: Solve for x
    x = 450,297,819,250.56/618,151.20
  6. Step 6: Final answer
    x = 728,459.02

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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.