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Finding the Fourth Proportional to 5,917,306.80, 8,879,459.40 and 3,901,378.80

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Solution

The fourth proportional to 5,917,306.80, 8,879,459.40 and 3,901,378.80 is: 5,854,375.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,917,306.80 : 8,879,459.40 = 3,901,378.80 : x
  2. Step 2: Convert to fraction form
    5,917,306.80/8,879,459.40 = 3,901,378.80/x
  3. Step 3: Cross multiply
    5,917,306.80x = 8,879,459.40 × 3,901,378.80
  4. Step 4: Simplify right side
    5,917,306.80x = 34,642,134,658,620.72
  5. Step 5: Solve for x
    x = 34,642,134,658,620.72/5,917,306.80
  6. Step 6: Final answer
    x = 5,854,375.28

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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.