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Finding the Fourth Proportional to 17,809.68, 26,735.20 and 10,419.52

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Solution

The fourth proportional to 17,809.68, 26,735.20 and 10,419.52 is: 15,641.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,809.68 : 26,735.20 = 10,419.52 : x
  2. Step 2: Convert to fraction form
    17,809.68/26,735.20 = 10,419.52/x
  3. Step 3: Cross multiply
    17,809.68x = 26,735.20 × 10,419.52
  4. Step 4: Simplify right side
    17,809.68x = 278,567,951.10
  5. Step 5: Solve for x
    x = 278,567,951.10/17,809.68
  6. Step 6: Final answer
    x = 15,641.38

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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.