Home / 28,383,398.68-39,186,105-18,610,890.61

Finding the Fourth Proportional to 28,383,398.68, 39,186,105 and 18,610,890.61

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Solution

The fourth proportional to 28,383,398.68, 39,186,105 and 18,610,890.61 is: 25,694,185.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383,398.68 : 39,186,105 = 18,610,890.61 : x
  2. Step 2: Convert to fraction form
    28,383,398.68/39,186,105 = 18,610,890.61/x
  3. Step 3: Cross multiply
    28,383,398.68x = 39,186,105 × 18,610,890.61
  4. Step 4: Simplify right side
    28,383,398.68x = 729,288,313,391,043.50
  5. Step 5: Solve for x
    x = 729,288,313,391,043.50/28,383,398.68
  6. Step 6: Final answer
    x = 25,694,185.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.