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Finding the Fourth Proportional to 17,622.90, 24,329.43 and 11,988

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Solution

The fourth proportional to 17,622.90, 24,329.43 and 11,988 is: 16,550.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,622.90 : 24,329.43 = 11,988 : x
  2. Step 2: Convert to fraction form
    17,622.90/24,329.43 = 11,988/x
  3. Step 3: Cross multiply
    17,622.90x = 24,329.43 × 11,988
  4. Step 4: Simplify right side
    17,622.90x = 291,661,206.84
  5. Step 5: Solve for x
    x = 291,661,206.84/17,622.90
  6. Step 6: Final answer
    x = 16,550.13

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Why These Related Problems?

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