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Finding the Fourth Proportional to 105,659.01, 158,487.21 and 25,697.43

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Solution

The fourth proportional to 105,659.01, 158,487.21 and 25,697.43 is: 38,545.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,659.01 : 158,487.21 = 25,697.43 : x
  2. Step 2: Convert to fraction form
    105,659.01/158,487.21 = 25,697.43/x
  3. Step 3: Cross multiply
    105,659.01x = 158,487.21 × 25,697.43
  4. Step 4: Simplify right side
    105,659.01x = 4,072,713,984.87
  5. Step 5: Solve for x
    x = 4,072,713,984.87/105,659.01
  6. Step 6: Final answer
    x = 38,545.83

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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.