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Finding the Fourth Proportional to 28,543.20, 39,398.04 and 16,611.84

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Solution

The fourth proportional to 28,543.20, 39,398.04 and 16,611.84 is: 22,929.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.20 : 39,398.04 = 16,611.84 : x
  2. Step 2: Convert to fraction form
    28,543.20/39,398.04 = 16,611.84/x
  3. Step 3: Cross multiply
    28,543.20x = 39,398.04 × 16,611.84
  4. Step 4: Simplify right side
    28,543.20x = 654,473,936.79
  5. Step 5: Solve for x
    x = 654,473,936.79/28,543.20
  6. Step 6: Final answer
    x = 22,929.24

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.