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Finding the Fourth Proportional to 13,719.01, 20,556.89 and 10,606.63

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Solution

The fourth proportional to 13,719.01, 20,556.89 and 10,606.63 is: 15,893.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.01 : 20,556.89 = 10,606.63 : x
  2. Step 2: Convert to fraction form
    13,719.01/20,556.89 = 10,606.63/x
  3. Step 3: Cross multiply
    13,719.01x = 20,556.89 × 10,606.63
  4. Step 4: Simplify right side
    13,719.01x = 218,039,170.36
  5. Step 5: Solve for x
    x = 218,039,170.36/13,719.01
  6. Step 6: Final answer
    x = 15,893.22

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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.