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Finding the Fourth Proportional to 61,809.52, 85,302.41 and 34,956.80

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Solution

The fourth proportional to 61,809.52, 85,302.41 and 34,956.80 is: 48,243.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,809.52 : 85,302.41 = 34,956.80 : x
  2. Step 2: Convert to fraction form
    61,809.52/85,302.41 = 34,956.80/x
  3. Step 3: Cross multiply
    61,809.52x = 85,302.41 × 34,956.80
  4. Step 4: Simplify right side
    61,809.52x = 2,981,899,285.89
  5. Step 5: Solve for x
    x = 2,981,899,285.89/61,809.52
  6. Step 6: Final answer
    x = 48,243.37

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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.