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Finding the Fourth Proportional to 220,696.50, 331,045.56 and 54,484.50

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Solution

The fourth proportional to 220,696.50, 331,045.56 and 54,484.50 is: 81,726.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,696.50 : 331,045.56 = 54,484.50 : x
  2. Step 2: Convert to fraction form
    220,696.50/331,045.56 = 54,484.50/x
  3. Step 3: Cross multiply
    220,696.50x = 331,045.56 × 54,484.50
  4. Step 4: Simplify right side
    220,696.50x = 18,036,851,813.82
  5. Step 5: Solve for x
    x = 18,036,851,813.82/220,696.50
  6. Step 6: Final answer
    x = 81,726.95

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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.