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Finding the Fourth Proportional to 89,757.42, 134,648.44 and 39,836.42

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Solution

The fourth proportional to 89,757.42, 134,648.44 and 39,836.42 is: 59,760.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,757.42 : 134,648.44 = 39,836.42 : x
  2. Step 2: Convert to fraction form
    89,757.42/134,648.44 = 39,836.42/x
  3. Step 3: Cross multiply
    89,757.42x = 134,648.44 × 39,836.42
  4. Step 4: Simplify right side
    89,757.42x = 5,363,911,808.18
  5. Step 5: Solve for x
    x = 5,363,911,808.18/89,757.42
  6. Step 6: Final answer
    x = 59,760.09

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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.