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Finding the Fourth Proportional to 19,101.20, 26,419.56 and 16,893.20

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Solution

The fourth proportional to 19,101.20, 26,419.56 and 16,893.20 is: 23,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,101.20 : 26,419.56 = 16,893.20 : x
  2. Step 2: Convert to fraction form
    19,101.20/26,419.56 = 16,893.20/x
  3. Step 3: Cross multiply
    19,101.20x = 26,419.56 × 16,893.20
  4. Step 4: Simplify right side
    19,101.20x = 446,310,910.99
  5. Step 5: Solve for x
    x = 446,310,910.99/19,101.20
  6. Step 6: Final answer
    x = 23,365.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.