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Finding the Fourth Proportional to 8,462.71, 11,674.65 and 5,479.53

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Solution

The fourth proportional to 8,462.71, 11,674.65 and 5,479.53 is: 7,559.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,462.71 : 11,674.65 = 5,479.53 : x
  2. Step 2: Convert to fraction form
    8,462.71/11,674.65 = 5,479.53/x
  3. Step 3: Cross multiply
    8,462.71x = 11,674.65 × 5,479.53
  4. Step 4: Simplify right side
    8,462.71x = 63,971,594.91
  5. Step 5: Solve for x
    x = 63,971,594.91/8,462.71
  6. Step 6: Final answer
    x = 7,559.23

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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.