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Finding the Fourth Proportional to 105,361.65, 158,042.61 and 43,032.15

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Solution

The fourth proportional to 105,361.65, 158,042.61 and 43,032.15 is: 64,548.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,361.65 : 158,042.61 = 43,032.15 : x
  2. Step 2: Convert to fraction form
    105,361.65/158,042.61 = 43,032.15/x
  3. Step 3: Cross multiply
    105,361.65x = 158,042.61 × 43,032.15
  4. Step 4: Simplify right side
    105,361.65x = 6,800,913,299.91
  5. Step 5: Solve for x
    x = 6,800,913,299.91/105,361.65
  6. Step 6: Final answer
    x = 64,548.28

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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.