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Finding the Fourth Proportional to 630,134.60, 945,201.90 and 621,840.20

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Solution

The fourth proportional to 630,134.60, 945,201.90 and 621,840.20 is: 932,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,134.60 : 945,201.90 = 621,840.20 : x
  2. Step 2: Convert to fraction form
    630,134.60/945,201.90 = 621,840.20/x
  3. Step 3: Cross multiply
    630,134.60x = 945,201.90 × 621,840.20
  4. Step 4: Simplify right side
    630,134.60x = 587,764,538,536.38
  5. Step 5: Solve for x
    x = 587,764,538,536.38/630,134.60
  6. Step 6: Final answer
    x = 932,760.30

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Double scale
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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.