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Finding the Fourth Proportional to 8,679,641.21, 12,993,921.66 and 5,793,850.20

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Solution

The fourth proportional to 8,679,641.21, 12,993,921.66 and 5,793,850.20 is: 8,673,726.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679,641.21 : 12,993,921.66 = 5,793,850.20 : x
  2. Step 2: Convert to fraction form
    8,679,641.21/12,993,921.66 = 5,793,850.20/x
  3. Step 3: Cross multiply
    8,679,641.21x = 12,993,921.66 × 5,793,850.20
  4. Step 4: Simplify right side
    8,679,641.21x = 75,284,835,608,575.33
  5. Step 5: Solve for x
    x = 75,284,835,608,575.33/8,679,641.21
  6. Step 6: Final answer
    x = 8,673,726.69

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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.