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Finding the Fourth Proportional to 5,877,145.90, 8,815,718.85 and 5,451,993.10

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Solution

The fourth proportional to 5,877,145.90, 8,815,718.85 and 5,451,993.10 is: 8,177,989.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,877,145.90 : 8,815,718.85 = 5,451,993.10 : x
  2. Step 2: Convert to fraction form
    5,877,145.90/8,815,718.85 = 5,451,993.10/x
  3. Step 3: Cross multiply
    5,877,145.90x = 8,815,718.85 × 5,451,993.10
  4. Step 4: Simplify right side
    5,877,145.90x = 48,063,238,341,739.93
  5. Step 5: Solve for x
    x = 48,063,238,341,739.93/5,877,145.90
  6. Step 6: Final answer
    x = 8,177,989.65

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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.