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Finding the Fourth Proportional to 21,855.92, 32,720.09 and 16,258.42

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Solution

The fourth proportional to 21,855.92, 32,720.09 and 16,258.42 is: 24,340.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,855.92 : 32,720.09 = 16,258.42 : x
  2. Step 2: Convert to fraction form
    21,855.92/32,720.09 = 16,258.42/x
  3. Step 3: Cross multiply
    21,855.92x = 32,720.09 × 16,258.42
  4. Step 4: Simplify right side
    21,855.92x = 531,976,802.06
  5. Step 5: Solve for x
    x = 531,976,802.06/21,855.92
  6. Step 6: Final answer
    x = 24,340.17

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1.5x scale

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.