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Finding the Fourth Proportional to 663,136.40, 994,704.60 and 615,897.20

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Solution

The fourth proportional to 663,136.40, 994,704.60 and 615,897.20 is: 923,845.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,136.40 : 994,704.60 = 615,897.20 : x
  2. Step 2: Convert to fraction form
    663,136.40/994,704.60 = 615,897.20/x
  3. Step 3: Cross multiply
    663,136.40x = 994,704.60 × 615,897.20
  4. Step 4: Simplify right side
    663,136.40x = 612,635,777,967.12
  5. Step 5: Solve for x
    x = 612,635,777,967.12/663,136.40
  6. Step 6: Final answer
    x = 923,845.80

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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.