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Finding the Fourth Proportional to 15,901.01, 21,944.42 and 9,186.92

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Solution

The fourth proportional to 15,901.01, 21,944.42 and 9,186.92 is: 12,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,901.01 : 21,944.42 = 9,186.92 : x
  2. Step 2: Convert to fraction form
    15,901.01/21,944.42 = 9,186.92/x
  3. Step 3: Cross multiply
    15,901.01x = 21,944.42 × 9,186.92
  4. Step 4: Simplify right side
    15,901.01x = 201,601,630.99
  5. Step 5: Solve for x
    x = 201,601,630.99/15,901.01
  6. Step 6: Final answer
    x = 12,678.54

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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.