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Finding the Fourth Proportional to 15,592.91, 21,519.95 and 9,221.45

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Solution

The fourth proportional to 15,592.91, 21,519.95 and 9,221.45 is: 12,726.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,592.91 : 21,519.95 = 9,221.45 : x
  2. Step 2: Convert to fraction form
    15,592.91/21,519.95 = 9,221.45/x
  3. Step 3: Cross multiply
    15,592.91x = 21,519.95 × 9,221.45
  4. Step 4: Simplify right side
    15,592.91x = 198,444,989.22
  5. Step 5: Solve for x
    x = 198,444,989.22/15,592.91
  6. Step 6: Final answer
    x = 12,726.62

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.