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Finding the Fourth Proportional to 3,478,443.40, 5,217,665.10 and 3,478,443.40

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Solution

The fourth proportional to 3,478,443.40, 5,217,665.10 and 3,478,443.40 is: 5,217,665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478,443.40 : 5,217,665.10 = 3,478,443.40 : x
  2. Step 2: Convert to fraction form
    3,478,443.40/5,217,665.10 = 3,478,443.40/x
  3. Step 3: Cross multiply
    3,478,443.40x = 5,217,665.10 × 3,478,443.40
  4. Step 4: Simplify right side
    3,478,443.40x = 18,149,352,730,505.34
  5. Step 5: Solve for x
    x = 18,149,352,730,505.34/3,478,443.40
  6. Step 6: Final answer
    x = 5,217,665.10

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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.