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Finding the Fourth Proportional to 21,052.90, 29,052.57 and 12,100.17

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Solution

The fourth proportional to 21,052.90, 29,052.57 and 12,100.17 is: 16,697.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,052.90 : 29,052.57 = 12,100.17 : x
  2. Step 2: Convert to fraction form
    21,052.90/29,052.57 = 12,100.17/x
  3. Step 3: Cross multiply
    21,052.90x = 29,052.57 × 12,100.17
  4. Step 4: Simplify right side
    21,052.90x = 351,541,035.94
  5. Step 5: Solve for x
    x = 351,541,035.94/21,052.90
  6. Step 6: Final answer
    x = 16,697.99

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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.