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Finding the Fourth Proportional to 663,897.60, 995,846.40 and 451,321.20

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Solution

The fourth proportional to 663,897.60, 995,846.40 and 451,321.20 is: 676,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,897.60 : 995,846.40 = 451,321.20 : x
  2. Step 2: Convert to fraction form
    663,897.60/995,846.40 = 451,321.20/x
  3. Step 3: Cross multiply
    663,897.60x = 995,846.40 × 451,321.20
  4. Step 4: Simplify right side
    663,897.60x = 449,446,592,263.68
  5. Step 5: Solve for x
    x = 449,446,592,263.68/663,897.60
  6. Step 6: Final answer
    x = 676,981.80

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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.