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Finding the Fourth Proportional to 105,350.92, 158,026.51 and 43,021.42

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Solution

The fourth proportional to 105,350.92, 158,026.51 and 43,021.42 is: 64,532.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,350.92 : 158,026.51 = 43,021.42 : x
  2. Step 2: Convert to fraction form
    105,350.92/158,026.51 = 43,021.42/x
  3. Step 3: Cross multiply
    105,350.92x = 158,026.51 × 43,021.42
  4. Step 4: Simplify right side
    105,350.92x = 6,798,524,516.55
  5. Step 5: Solve for x
    x = 6,798,524,516.55/105,350.92
  6. Step 6: Final answer
    x = 64,532.18

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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.