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Finding the Fourth Proportional to 5,987,711.70, 8,981,567.55 and 1,728,018.90

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Solution

The fourth proportional to 5,987,711.70, 8,981,567.55 and 1,728,018.90 is: 2,592,028.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,987,711.70 : 8,981,567.55 = 1,728,018.90 : x
  2. Step 2: Convert to fraction form
    5,987,711.70/8,981,567.55 = 1,728,018.90/x
  3. Step 3: Cross multiply
    5,987,711.70x = 8,981,567.55 × 1,728,018.90
  4. Step 4: Simplify right side
    5,987,711.70x = 15,520,318,478,026.70
  5. Step 5: Solve for x
    x = 15,520,318,478,026.70/5,987,711.70
  6. Step 6: Final answer
    x = 2,592,028.35

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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.