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Finding the Fourth Proportional to 102,911.52, 154,367.04 and 67,595.76

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Solution

The fourth proportional to 102,911.52, 154,367.04 and 67,595.76 is: 101,393.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,911.52 : 154,367.04 = 67,595.76 : x
  2. Step 2: Convert to fraction form
    102,911.52/154,367.04 = 67,595.76/x
  3. Step 3: Cross multiply
    102,911.52x = 154,367.04 × 67,595.76
  4. Step 4: Simplify right side
    102,911.52x = 10,434,557,387.75
  5. Step 5: Solve for x
    x = 10,434,557,387.75/102,911.52
  6. Step 6: Final answer
    x = 101,393.48

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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.