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Finding the Fourth Proportional to 235,983.36, 353,881.08 and 86,189.52

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Solution

The fourth proportional to 235,983.36, 353,881.08 and 86,189.52 is: 129,249.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,983.36 : 353,881.08 = 86,189.52 : x
  2. Step 2: Convert to fraction form
    235,983.36/353,881.08 = 86,189.52/x
  3. Step 3: Cross multiply
    235,983.36x = 353,881.08 × 86,189.52
  4. Step 4: Simplify right side
    235,983.36x = 30,500,840,422.28
  5. Step 5: Solve for x
    x = 30,500,840,422.28/235,983.36
  6. Step 6: Final answer
    x = 129,249.96

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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.