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Finding the Fourth Proportional to 18,593.12, 27,889.70 and 13,071.16

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Solution

The fourth proportional to 18,593.12, 27,889.70 and 13,071.16 is: 19,606.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593.12 : 27,889.70 = 13,071.16 : x
  2. Step 2: Convert to fraction form
    18,593.12/27,889.70 = 13,071.16/x
  3. Step 3: Cross multiply
    18,593.12x = 27,889.70 × 13,071.16
  4. Step 4: Simplify right side
    18,593.12x = 364,550,731.05
  5. Step 5: Solve for x
    x = 364,550,731.05/18,593.12
  6. Step 6: Final answer
    x = 19,606.75

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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.