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Finding the Fourth Proportional to 72,711.84, 109,087.44 and 25,968.48

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Solution

The fourth proportional to 72,711.84, 109,087.44 and 25,968.48 is: 38,959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,711.84 : 109,087.44 = 25,968.48 : x
  2. Step 2: Convert to fraction form
    72,711.84/109,087.44 = 25,968.48/x
  3. Step 3: Cross multiply
    72,711.84x = 109,087.44 × 25,968.48
  4. Step 4: Simplify right side
    72,711.84x = 2,832,835,003.89
  5. Step 5: Solve for x
    x = 2,832,835,003.89/72,711.84
  6. Step 6: Final answer
    x = 38,959.75

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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.