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Finding the Fourth Proportional to 34,706.80, 51,987.30 and 28,874.80

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Solution

The fourth proportional to 34,706.80, 51,987.30 and 28,874.80 is: 43,251.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,706.80 : 51,987.30 = 28,874.80 : x
  2. Step 2: Convert to fraction form
    34,706.80/51,987.30 = 28,874.80/x
  3. Step 3: Cross multiply
    34,706.80x = 51,987.30 × 28,874.80
  4. Step 4: Simplify right side
    34,706.80x = 1,501,122,890.04
  5. Step 5: Solve for x
    x = 1,501,122,890.04/34,706.80
  6. Step 6: Final answer
    x = 43,251.55

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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.