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Finding the Fourth Proportional to 14,503.11, 21,732.80 and 10,787.91

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Solution

The fourth proportional to 14,503.11, 21,732.80 and 10,787.91 is: 16,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,503.11 : 21,732.80 = 10,787.91 : x
  2. Step 2: Convert to fraction form
    14,503.11/21,732.80 = 10,787.91/x
  3. Step 3: Cross multiply
    14,503.11x = 21,732.80 × 10,787.91
  4. Step 4: Simplify right side
    14,503.11x = 234,451,436.51
  5. Step 5: Solve for x
    x = 234,451,436.51/14,503.11
  6. Step 6: Final answer
    x = 16,165.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.