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Finding the Fourth Proportional to 998,466.20, 1,400,341 and 998,466.20

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Solution

The fourth proportional to 998,466.20, 1,400,341 and 998,466.20 is: 1,400,341

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,466.20 : 1,400,341 = 998,466.20 : x
  2. Step 2: Convert to fraction form
    998,466.20/1,400,341 = 998,466.20/x
  3. Step 3: Cross multiply
    998,466.20x = 1,400,341 × 998,466.20
  4. Step 4: Simplify right side
    998,466.20x = 1,398,193,156,974.20
  5. Step 5: Solve for x
    x = 1,398,193,156,974.20/998,466.20
  6. Step 6: Final answer
    x = 1,400,341

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.