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Finding the Fourth Proportional to 61,809.68, 85,299.03 and 34,956.20

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Solution

The fourth proportional to 61,809.68, 85,299.03 and 34,956.20 is: 48,240.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,809.68 : 85,299.03 = 34,956.20 : x
  2. Step 2: Convert to fraction form
    61,809.68/85,299.03 = 34,956.20/x
  3. Step 3: Cross multiply
    61,809.68x = 85,299.03 × 34,956.20
  4. Step 4: Simplify right side
    61,809.68x = 2,981,729,525.99
  5. Step 5: Solve for x
    x = 2,981,729,525.99/61,809.68
  6. Step 6: Final answer
    x = 48,240.50

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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.