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Finding the Fourth Proportional to 19,691.68, 29,551.37 and 17,809.48

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Solution

The fourth proportional to 19,691.68, 29,551.37 and 17,809.48 is: 26,726.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,691.68 : 29,551.37 = 17,809.48 : x
  2. Step 2: Convert to fraction form
    19,691.68/29,551.37 = 17,809.48/x
  3. Step 3: Cross multiply
    19,691.68x = 29,551.37 × 17,809.48
  4. Step 4: Simplify right side
    19,691.68x = 526,294,532.99
  5. Step 5: Solve for x
    x = 526,294,532.99/19,691.68
  6. Step 6: Final answer
    x = 26,726.75

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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.