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Finding the Fourth Proportional to 15,889.68, 21,927.24 and 9,600.96

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Solution

The fourth proportional to 15,889.68, 21,927.24 and 9,600.96 is: 13,249.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,889.68 : 21,927.24 = 9,600.96 : x
  2. Step 2: Convert to fraction form
    15,889.68/21,927.24 = 9,600.96/x
  3. Step 3: Cross multiply
    15,889.68x = 21,927.24 × 9,600.96
  4. Step 4: Simplify right side
    15,889.68x = 210,522,554.15
  5. Step 5: Solve for x
    x = 210,522,554.15/15,889.68
  6. Step 6: Final answer
    x = 13,249.01

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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.