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Finding the Fourth Proportional to 61,990.74, 92,972.14 and 17,616.51

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Solution

The fourth proportional to 61,990.74, 92,972.14 and 17,616.51 is: 26,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,990.74 : 92,972.14 = 17,616.51 : x
  2. Step 2: Convert to fraction form
    61,990.74/92,972.14 = 17,616.51/x
  3. Step 3: Cross multiply
    61,990.74x = 92,972.14 × 17,616.51
  4. Step 4: Simplify right side
    61,990.74x = 1,637,844,589.99
  5. Step 5: Solve for x
    x = 1,637,844,589.99/61,990.74
  6. Step 6: Final answer
    x = 26,420.79

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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.