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Finding the Fourth Proportional to 21,572.16, 32,358.12 and 17,198.16

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Solution

The fourth proportional to 21,572.16, 32,358.12 and 17,198.16 is: 25,797.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,572.16 : 32,358.12 = 17,198.16 : x
  2. Step 2: Convert to fraction form
    21,572.16/32,358.12 = 17,198.16/x
  3. Step 3: Cross multiply
    21,572.16x = 32,358.12 × 17,198.16
  4. Step 4: Simplify right side
    21,572.16x = 556,500,125.06
  5. Step 5: Solve for x
    x = 556,500,125.06/21,572.16
  6. Step 6: Final answer
    x = 25,797.14

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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.