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Finding the Fourth Proportional to 27,978,759.80, 41,968,139.70 and 16,613,358.20

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Solution

The fourth proportional to 27,978,759.80, 41,968,139.70 and 16,613,358.20 is: 24,920,037.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,978,759.80 : 41,968,139.70 = 16,613,358.20 : x
  2. Step 2: Convert to fraction form
    27,978,759.80/41,968,139.70 = 16,613,358.20/x
  3. Step 3: Cross multiply
    27,978,759.80x = 41,968,139.70 × 16,613,358.20
  4. Step 4: Simplify right side
    27,978,759.80x = 697,231,737,823,740.50
  5. Step 5: Solve for x
    x = 697,231,737,823,740.50/27,978,759.80
  6. Step 6: Final answer
    x = 24,920,037.30

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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.