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Finding the Fourth Proportional to 21,192.67, 29,244.72 and 11,760.67

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Solution

The fourth proportional to 21,192.67, 29,244.72 and 11,760.67 is: 16,229.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.67 : 29,244.72 = 11,760.67 : x
  2. Step 2: Convert to fraction form
    21,192.67/29,244.72 = 11,760.67/x
  3. Step 3: Cross multiply
    21,192.67x = 29,244.72 × 11,760.67
  4. Step 4: Simplify right side
    21,192.67x = 343,937,501.16
  5. Step 5: Solve for x
    x = 343,937,501.16/21,192.67
  6. Step 6: Final answer
    x = 16,229.08

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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.