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Finding the Fourth Proportional to 21,788.67, 32,679.91 and 6,995.67

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Solution

The fourth proportional to 21,788.67, 32,679.91 and 6,995.67 is: 10,492.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,788.67 : 32,679.91 = 6,995.67 : x
  2. Step 2: Convert to fraction form
    21,788.67/32,679.91 = 6,995.67/x
  3. Step 3: Cross multiply
    21,788.67x = 32,679.91 × 6,995.67
  4. Step 4: Simplify right side
    21,788.67x = 228,617,865.99
  5. Step 5: Solve for x
    x = 228,617,865.99/21,788.67
  6. Step 6: Final answer
    x = 10,492.51

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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.