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Finding the Fourth Proportional to 22,215.17, 30,656.90 and 13,267.91

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Solution

The fourth proportional to 22,215.17, 30,656.90 and 13,267.91 is: 18,309.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,215.17 : 30,656.90 = 13,267.91 : x
  2. Step 2: Convert to fraction form
    22,215.17/30,656.90 = 13,267.91/x
  3. Step 3: Cross multiply
    22,215.17x = 30,656.90 × 13,267.91
  4. Step 4: Simplify right side
    22,215.17x = 406,752,852.81
  5. Step 5: Solve for x
    x = 406,752,852.81/22,215.17
  6. Step 6: Final answer
    x = 18,309.69

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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.