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Finding the Fourth Proportional to 235,691.52, 353,525.76 and 87,936

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Solution

The fourth proportional to 235,691.52, 353,525.76 and 87,936 is: 131,899.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,691.52 : 353,525.76 = 87,936 : x
  2. Step 2: Convert to fraction form
    235,691.52/353,525.76 = 87,936/x
  3. Step 3: Cross multiply
    235,691.52x = 353,525.76 × 87,936
  4. Step 4: Simplify right side
    235,691.52x = 31,087,641,231.36
  5. Step 5: Solve for x
    x = 31,087,641,231.36/235,691.52
  6. Step 6: Final answer
    x = 131,899.70

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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.