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Finding the Fourth Proportional to 61,647.48, 85,072.68 and 34,423.98

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Solution

The fourth proportional to 61,647.48, 85,072.68 and 34,423.98 is: 47,504.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,647.48 : 85,072.68 = 34,423.98 : x
  2. Step 2: Convert to fraction form
    61,647.48/85,072.68 = 34,423.98/x
  3. Step 3: Cross multiply
    61,647.48x = 85,072.68 × 34,423.98
  4. Step 4: Simplify right side
    61,647.48x = 2,928,540,234.87
  5. Step 5: Solve for x
    x = 2,928,540,234.87/61,647.48
  6. Step 6: Final answer
    x = 47,504.62

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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.