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Finding the Fourth Proportional to 7,744.71, 10,687.75 and 4,207.95

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Solution

The fourth proportional to 7,744.71, 10,687.75 and 4,207.95 is: 5,806.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,744.71 : 10,687.75 = 4,207.95 : x
  2. Step 2: Convert to fraction form
    7,744.71/10,687.75 = 4,207.95/x
  3. Step 3: Cross multiply
    7,744.71x = 10,687.75 × 4,207.95
  4. Step 4: Simplify right side
    7,744.71x = 44,973,507.09
  5. Step 5: Solve for x
    x = 44,973,507.09/7,744.71
  6. Step 6: Final answer
    x = 5,806.99

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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.