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Finding the Fourth Proportional to 57,994.79, 86,988.98 and 15,871.82

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Solution

The fourth proportional to 57,994.79, 86,988.98 and 15,871.82 is: 23,806.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,994.79 : 86,988.98 = 15,871.82 : x
  2. Step 2: Convert to fraction form
    57,994.79/86,988.98 = 15,871.82/x
  3. Step 3: Cross multiply
    57,994.79x = 86,988.98 × 15,871.82
  4. Step 4: Simplify right side
    57,994.79x = 1,380,673,037.28
  5. Step 5: Solve for x
    x = 1,380,673,037.28/57,994.79
  6. Step 6: Final answer
    x = 23,806.85

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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.