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Finding the Fourth Proportional to 128,043.34, 192,060.15 and 34,551.52

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Solution

The fourth proportional to 128,043.34, 192,060.15 and 34,551.52 is: 51,825.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,043.34 : 192,060.15 = 34,551.52 : x
  2. Step 2: Convert to fraction form
    128,043.34/192,060.15 = 34,551.52/x
  3. Step 3: Cross multiply
    128,043.34x = 192,060.15 × 34,551.52
  4. Step 4: Simplify right side
    128,043.34x = 6,635,970,113.93
  5. Step 5: Solve for x
    x = 6,635,970,113.93/128,043.34
  6. Step 6: Final answer
    x = 51,825.97

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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.