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Finding the Fourth Proportional to 275,628.33, 413,404.79 and 75,920.00

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Solution

The fourth proportional to 275,628.33, 413,404.79 and 75,920.00 is: 113,869.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,628.33 : 413,404.79 = 75,920.00 : x
  2. Step 2: Convert to fraction form
    275,628.33/413,404.79 = 75,920.00/x
  3. Step 3: Cross multiply
    275,628.33x = 413,404.79 × 75,920.00
  4. Step 4: Simplify right side
    275,628.33x = 31,385,689,210.18
  5. Step 5: Solve for x
    x = 31,385,689,210.18/275,628.33
  6. Step 6: Final answer
    x = 113,869.61

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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.