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Finding the Fourth Proportional to 61,605.87, 92,420.21 and 19,496.55

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Solution

The fourth proportional to 61,605.87, 92,420.21 and 19,496.55 is: 29,248.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,605.87 : 92,420.21 = 19,496.55 : x
  2. Step 2: Convert to fraction form
    61,605.87/92,420.21 = 19,496.55/x
  3. Step 3: Cross multiply
    61,605.87x = 92,420.21 × 19,496.55
  4. Step 4: Simplify right side
    61,605.87x = 1,801,875,245.28
  5. Step 5: Solve for x
    x = 1,801,875,245.28/61,605.87
  6. Step 6: Final answer
    x = 29,248.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.