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Finding the Fourth Proportional to 61,845.72, 85,347.10 and 34,987.67

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Solution

The fourth proportional to 61,845.72, 85,347.10 and 34,987.67 is: 48,282.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,845.72 : 85,347.10 = 34,987.67 : x
  2. Step 2: Convert to fraction form
    61,845.72/85,347.10 = 34,987.67/x
  3. Step 3: Cross multiply
    61,845.72x = 85,347.10 × 34,987.67
  4. Step 4: Simplify right side
    61,845.72x = 2,986,096,170.26
  5. Step 5: Solve for x
    x = 2,986,096,170.26/61,845.72
  6. Step 6: Final answer
    x = 48,282.99

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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.