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Finding the Fourth Proportional to 21,543.59, 29,732.93 and 12,113.97

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Solution

The fourth proportional to 21,543.59, 29,732.93 and 12,113.97 is: 16,718.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,543.59 : 29,732.93 = 12,113.97 : x
  2. Step 2: Convert to fraction form
    21,543.59/29,732.93 = 12,113.97/x
  3. Step 3: Cross multiply
    21,543.59x = 29,732.93 × 12,113.97
  4. Step 4: Simplify right side
    21,543.59x = 360,183,761.46
  5. Step 5: Solve for x
    x = 360,183,761.46/21,543.59
  6. Step 6: Final answer
    x = 16,718.84

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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.