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Finding the Fourth Proportional to 43,787.96, 65,691.16 and 14,203.48

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Solution

The fourth proportional to 43,787.96, 65,691.16 and 14,203.48 is: 21,308.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,787.96 : 65,691.16 = 14,203.48 : x
  2. Step 2: Convert to fraction form
    43,787.96/65,691.16 = 14,203.48/x
  3. Step 3: Cross multiply
    43,787.96x = 65,691.16 × 14,203.48
  4. Step 4: Simplify right side
    43,787.96x = 933,043,123.84
  5. Step 5: Solve for x
    x = 933,043,123.84/43,787.96
  6. Step 6: Final answer
    x = 21,308.21

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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.