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Finding the Fourth Proportional to 6,231,115.20, 8,736,158.40 and 6,231,115.20

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Solution

The fourth proportional to 6,231,115.20, 8,736,158.40 and 6,231,115.20 is: 8,736,158.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,231,115.20 : 8,736,158.40 = 6,231,115.20 : x
  2. Step 2: Convert to fraction form
    6,231,115.20/8,736,158.40 = 6,231,115.20/x
  3. Step 3: Cross multiply
    6,231,115.20x = 8,736,158.40 × 6,231,115.20
  4. Step 4: Simplify right side
    6,231,115.20x = 54,436,009,395,847.69
  5. Step 5: Solve for x
    x = 54,436,009,395,847.69/6,231,115.20
  6. Step 6: Final answer
    x = 8,736,158.40

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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.