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Finding the Fourth Proportional to 11,808.10, 17,712.15 and 9,043.30

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Solution

The fourth proportional to 11,808.10, 17,712.15 and 9,043.30 is: 13,564.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,808.10 : 17,712.15 = 9,043.30 : x
  2. Step 2: Convert to fraction form
    11,808.10/17,712.15 = 9,043.30/x
  3. Step 3: Cross multiply
    11,808.10x = 17,712.15 × 9,043.30
  4. Step 4: Simplify right side
    11,808.10x = 160,176,286.10
  5. Step 5: Solve for x
    x = 160,176,286.10/11,808.10
  6. Step 6: Final answer
    x = 13,564.95

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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.