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Finding the Fourth Proportional to 3,653,138.40, 5,125,591.20 and 3,653,138.40

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Solution

The fourth proportional to 3,653,138.40, 5,125,591.20 and 3,653,138.40 is: 5,125,591.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653,138.40 : 5,125,591.20 = 3,653,138.40 : x
  2. Step 2: Convert to fraction form
    3,653,138.40/5,125,591.20 = 3,653,138.40/x
  3. Step 3: Cross multiply
    3,653,138.40x = 5,125,591.20 × 3,653,138.40
  4. Step 4: Simplify right side
    3,653,138.40x = 18,724,494,035,422.08
  5. Step 5: Solve for x
    x = 18,724,494,035,422.08/3,653,138.40
  6. Step 6: Final answer
    x = 5,125,591.20

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