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Finding the Fourth Proportional to 62,690.91, 86,512.68 and 34,396.58

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Solution

The fourth proportional to 62,690.91, 86,512.68 and 34,396.58 is: 47,466.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,690.91 : 86,512.68 = 34,396.58 : x
  2. Step 2: Convert to fraction form
    62,690.91/86,512.68 = 34,396.58/x
  3. Step 3: Cross multiply
    62,690.91x = 86,512.68 × 34,396.58
  4. Step 4: Simplify right side
    62,690.91x = 2,975,739,886.07
  5. Step 5: Solve for x
    x = 2,975,739,886.07/62,690.91
  6. Step 6: Final answer
    x = 47,466.85

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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.