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Finding the Fourth Proportional to 19,369.63, 26,734.64 and 11,822.20

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Solution

The fourth proportional to 19,369.63, 26,734.64 and 11,822.20 is: 16,317.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,369.63 : 26,734.64 = 11,822.20 : x
  2. Step 2: Convert to fraction form
    19,369.63/26,734.64 = 11,822.20/x
  3. Step 3: Cross multiply
    19,369.63x = 26,734.64 × 11,822.20
  4. Step 4: Simplify right side
    19,369.63x = 316,062,261.01
  5. Step 5: Solve for x
    x = 316,062,261.01/19,369.63
  6. Step 6: Final answer
    x = 16,317.41

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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.