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Finding the Fourth Proportional to 71,586.73, 98,786.98 and 39,757.67

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Solution

The fourth proportional to 71,586.73, 98,786.98 and 39,757.67 is: 54,864.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,586.73 : 98,786.98 = 39,757.67 : x
  2. Step 2: Convert to fraction form
    71,586.73/98,786.98 = 39,757.67/x
  3. Step 3: Cross multiply
    71,586.73x = 98,786.98 × 39,757.67
  4. Step 4: Simplify right side
    71,586.73x = 3,927,540,298.71
  5. Step 5: Solve for x
    x = 3,927,540,298.71/71,586.73
  6. Step 6: Final answer
    x = 54,864.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.