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Finding the Fourth Proportional to 7,713.70, 10,644.78 and 4,176.97

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Solution

The fourth proportional to 7,713.70, 10,644.78 and 4,176.97 is: 5,764.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,713.70 : 10,644.78 = 4,176.97 : x
  2. Step 2: Convert to fraction form
    7,713.70/10,644.78 = 4,176.97/x
  3. Step 3: Cross multiply
    7,713.70x = 10,644.78 × 4,176.97
  4. Step 4: Simplify right side
    7,713.70x = 44,462,926.72
  5. Step 5: Solve for x
    x = 44,462,926.72/7,713.70
  6. Step 6: Final answer
    x = 5,764.15

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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.