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Finding the Fourth Proportional to 51,576.65, 71,179.18 and 28,917.12

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Solution

The fourth proportional to 51,576.65, 71,179.18 and 28,917.12 is: 39,907.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,576.65 : 71,179.18 = 28,917.12 : x
  2. Step 2: Convert to fraction form
    51,576.65/71,179.18 = 28,917.12/x
  3. Step 3: Cross multiply
    51,576.65x = 71,179.18 × 28,917.12
  4. Step 4: Simplify right side
    51,576.65x = 2,058,297,084.19
  5. Step 5: Solve for x
    x = 2,058,297,084.19/51,576.65
  6. Step 6: Final answer
    x = 39,907.54

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1.5x scale

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.