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Finding the Fourth Proportional to 28,161.19, 38,822.39 and 19,197.19

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Solution

The fourth proportional to 28,161.19, 38,822.39 and 19,197.19 is: 26,464.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.19 : 38,822.39 = 19,197.19 : x
  2. Step 2: Convert to fraction form
    28,161.19/38,822.39 = 19,197.19/x
  3. Step 3: Cross multiply
    28,161.19x = 38,822.39 × 19,197.19
  4. Step 4: Simplify right side
    28,161.19x = 745,280,701.10
  5. Step 5: Solve for x
    x = 745,280,701.10/28,161.19
  6. Step 6: Final answer
    x = 26,464.82

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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.