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Finding the Fourth Proportional to 21,998.50, 30,328.57 and 17,476.19

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Solution

The fourth proportional to 21,998.50, 30,328.57 and 17,476.19 is: 24,093.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.50 : 30,328.57 = 17,476.19 : x
  2. Step 2: Convert to fraction form
    21,998.50/30,328.57 = 17,476.19/x
  3. Step 3: Cross multiply
    21,998.50x = 30,328.57 × 17,476.19
  4. Step 4: Simplify right side
    21,998.50x = 530,027,829.18
  5. Step 5: Solve for x
    x = 530,027,829.18/21,998.50
  6. Step 6: Final answer
    x = 24,093.81

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1.5x scale

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.