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Finding the Fourth Proportional to 28,708.84, 39,614.82 and 16,132.84

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Solution

The fourth proportional to 28,708.84, 39,614.82 and 16,132.84 is: 22,261.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.84 : 39,614.82 = 16,132.84 : x
  2. Step 2: Convert to fraction form
    28,708.84/39,614.82 = 16,132.84/x
  3. Step 3: Cross multiply
    28,708.84x = 39,614.82 × 16,132.84
  4. Step 4: Simplify right side
    28,708.84x = 639,099,552.69
  5. Step 5: Solve for x
    x = 639,099,552.69/28,708.84
  6. Step 6: Final answer
    x = 22,261.42

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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.