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Finding the Fourth Proportional to 7,975.71, 11,008.97 and 5,456.87

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Solution

The fourth proportional to 7,975.71, 11,008.97 and 5,456.87 is: 7,532.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,975.71 : 11,008.97 = 5,456.87 : x
  2. Step 2: Convert to fraction form
    7,975.71/11,008.97 = 5,456.87/x
  3. Step 3: Cross multiply
    7,975.71x = 11,008.97 × 5,456.87
  4. Step 4: Simplify right side
    7,975.71x = 60,074,435.79
  5. Step 5: Solve for x
    x = 60,074,435.79/7,975.71
  6. Step 6: Final answer
    x = 7,532.17

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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.