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Finding the Fourth Proportional to 11,808.60, 17,720.37 and 10,700.28

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Solution

The fourth proportional to 11,808.60, 17,720.37 and 10,700.28 is: 16,057.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,808.60 : 17,720.37 = 10,700.28 : x
  2. Step 2: Convert to fraction form
    11,808.60/17,720.37 = 10,700.28/x
  3. Step 3: Cross multiply
    11,808.60x = 17,720.37 × 10,700.28
  4. Step 4: Simplify right side
    11,808.60x = 189,612,920.70
  5. Step 5: Solve for x
    x = 189,612,920.70/11,808.60
  6. Step 6: Final answer
    x = 16,057.19

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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.