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Finding the Fourth Proportional to 647,546.20, 972,194.10 and 411,350.20

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Solution

The fourth proportional to 647,546.20, 972,194.10 and 411,350.20 is: 617,581.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,546.20 : 972,194.10 = 411,350.20 : x
  2. Step 2: Convert to fraction form
    647,546.20/972,194.10 = 411,350.20/x
  3. Step 3: Cross multiply
    647,546.20x = 972,194.10 × 411,350.20
  4. Step 4: Simplify right side
    647,546.20x = 399,912,237,473.82
  5. Step 5: Solve for x
    x = 399,912,237,473.82/647,546.20
  6. Step 6: Final answer
    x = 617,581.01

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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.