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Finding the Fourth Proportional to 28,252.96, 38,988.72 and 15,677.44

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Solution

The fourth proportional to 28,252.96, 38,988.72 and 15,677.44 is: 21,634.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.96 : 38,988.72 = 15,677.44 : x
  2. Step 2: Convert to fraction form
    28,252.96/38,988.72 = 15,677.44/x
  3. Step 3: Cross multiply
    28,252.96x = 38,988.72 × 15,677.44
  4. Step 4: Simplify right side
    28,252.96x = 611,243,318.48
  5. Step 5: Solve for x
    x = 611,243,318.48/28,252.96
  6. Step 6: Final answer
    x = 21,634.66

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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.