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Finding the Fourth Proportional to 7,704.72, 10,632.46 and 4,167.88

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Solution

The fourth proportional to 7,704.72, 10,632.46 and 4,167.88 is: 5,751.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,704.72 : 10,632.46 = 4,167.88 : x
  2. Step 2: Convert to fraction form
    7,704.72/10,632.46 = 4,167.88/x
  3. Step 3: Cross multiply
    7,704.72x = 10,632.46 × 4,167.88
  4. Step 4: Simplify right side
    7,704.72x = 44,314,817.38
  5. Step 5: Solve for x
    x = 44,314,817.38/7,704.72
  6. Step 6: Final answer
    x = 5,751.65

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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.