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Finding the Fourth Proportional to 61,763.72, 85,235.64 and 34,905.68

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Solution

The fourth proportional to 61,763.72, 85,235.64 and 34,905.68 is: 48,170.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,763.72 : 85,235.64 = 34,905.68 : x
  2. Step 2: Convert to fraction form
    61,763.72/85,235.64 = 34,905.68/x
  3. Step 3: Cross multiply
    61,763.72x = 85,235.64 × 34,905.68
  4. Step 4: Simplify right side
    61,763.72x = 2,975,207,974.44
  5. Step 5: Solve for x
    x = 2,975,207,974.44/61,763.72
  6. Step 6: Final answer
    x = 48,170.80

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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.