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Finding the Fourth Proportional to 3,642,801.60, 5,107,387.20 and 3,642,801.60

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Solution

The fourth proportional to 3,642,801.60, 5,107,387.20 and 3,642,801.60 is: 5,107,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,642,801.60 : 5,107,387.20 = 3,642,801.60 : x
  2. Step 2: Convert to fraction form
    3,642,801.60/5,107,387.20 = 3,642,801.60/x
  3. Step 3: Cross multiply
    3,642,801.60x = 5,107,387.20 × 3,642,801.60
  4. Step 4: Simplify right side
    3,642,801.60x = 18,605,198,263,979.52
  5. Step 5: Solve for x
    x = 18,605,198,263,979.52/3,642,801.60
  6. Step 6: Final answer
    x = 5,107,387.20

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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.