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Finding the Fourth Proportional to 105,361.61, 158,042.57 and 43,032.11

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Solution

The fourth proportional to 105,361.61, 158,042.57 and 43,032.11 is: 64,548.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,361.61 : 158,042.57 = 43,032.11 : x
  2. Step 2: Convert to fraction form
    105,361.61/158,042.57 = 43,032.11/x
  3. Step 3: Cross multiply
    105,361.61x = 158,042.57 × 43,032.11
  4. Step 4: Simplify right side
    105,361.61x = 6,800,904,251.55
  5. Step 5: Solve for x
    x = 6,800,904,251.55/105,361.61
  6. Step 6: Final answer
    x = 64,548.22

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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.