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Finding the Fourth Proportional to 18,893.96, 26,082.08 and 13,858.12

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Solution

The fourth proportional to 18,893.96, 26,082.08 and 13,858.12 is: 19,130.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.96 : 26,082.08 = 13,858.12 : x
  2. Step 2: Convert to fraction form
    18,893.96/26,082.08 = 13,858.12/x
  3. Step 3: Cross multiply
    18,893.96x = 26,082.08 × 13,858.12
  4. Step 4: Simplify right side
    18,893.96x = 361,448,594.49
  5. Step 5: Solve for x
    x = 361,448,594.49/18,893.96
  6. Step 6: Final answer
    x = 19,130.38

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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.