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Finding the Fourth Proportional to 43,530.72, 65,293.92 and 12,361.92

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Solution

The fourth proportional to 43,530.72, 65,293.92 and 12,361.92 is: 18,542.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,530.72 : 65,293.92 = 12,361.92 : x
  2. Step 2: Convert to fraction form
    43,530.72/65,293.92 = 12,361.92/x
  3. Step 3: Cross multiply
    43,530.72x = 65,293.92 × 12,361.92
  4. Step 4: Simplify right side
    43,530.72x = 807,158,215.53
  5. Step 5: Solve for x
    x = 807,158,215.53/43,530.72
  6. Step 6: Final answer
    x = 18,542.27

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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.