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Finding the Fourth Proportional to 7,251.72, 10,862.94 and 4,780.44

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Solution

The fourth proportional to 7,251.72, 10,862.94 and 4,780.44 is: 7,161.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,251.72 : 10,862.94 = 4,780.44 : x
  2. Step 2: Convert to fraction form
    7,251.72/10,862.94 = 4,780.44/x
  3. Step 3: Cross multiply
    7,251.72x = 10,862.94 × 4,780.44
  4. Step 4: Simplify right side
    7,251.72x = 51,929,632.89
  5. Step 5: Solve for x
    x = 51,929,632.89/7,251.72
  6. Step 6: Final answer
    x = 7,161.01

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1.5x scale

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.