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Finding the Fourth Proportional to 619,517.67, 929,276.55 and 220,174.20

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Solution

The fourth proportional to 619,517.67, 929,276.55 and 220,174.20 is: 330,261.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,517.67 : 929,276.55 = 220,174.20 : x
  2. Step 2: Convert to fraction form
    619,517.67/929,276.55 = 220,174.20/x
  3. Step 3: Cross multiply
    619,517.67x = 929,276.55 × 220,174.20
  4. Step 4: Simplify right side
    619,517.67x = 204,602,720,975.01
  5. Step 5: Solve for x
    x = 204,602,720,975.01/619,517.67
  6. Step 6: Final answer
    x = 330,261.32

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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.