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Finding the Fourth Proportional to 21,863.80, 32,828.70 and 17,468.20

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Solution

The fourth proportional to 21,863.80, 32,828.70 and 17,468.20 is: 26,228.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.80 : 32,828.70 = 17,468.20 : x
  2. Step 2: Convert to fraction form
    21,863.80/32,828.70 = 17,468.20/x
  3. Step 3: Cross multiply
    21,863.80x = 32,828.70 × 17,468.20
  4. Step 4: Simplify right side
    21,863.80x = 573,458,297.34
  5. Step 5: Solve for x
    x = 573,458,297.34/21,863.80
  6. Step 6: Final answer
    x = 26,228.67

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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.