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Finding the Fourth Proportional to 613,025,974.80, 919,538,962.20 and 613,025,974.80

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Solution

The fourth proportional to 613,025,974.80, 919,538,962.20 and 613,025,974.80 is: 919,538,962.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,025,974.80 : 919,538,962.20 = 613,025,974.80 : x
  2. Step 2: Convert to fraction form
    613,025,974.80/919,538,962.20 = 613,025,974.80/x
  3. Step 3: Cross multiply
    613,025,974.80x = 919,538,962.20 × 613,025,974.80
  4. Step 4: Simplify right side
    613,025,974.80x = 563,701,268,669,235,328
  5. Step 5: Solve for x
    x = 563,701,268,669,235,328/613,025,974.80
  6. Step 6: Final answer
    x = 919,538,962.20

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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.