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Finding the Fourth Proportional to 18,554.03, 25,581.99 and 12,893.48

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Solution

The fourth proportional to 18,554.03, 25,581.99 and 12,893.48 is: 17,777.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,554.03 : 25,581.99 = 12,893.48 : x
  2. Step 2: Convert to fraction form
    18,554.03/25,581.99 = 12,893.48/x
  3. Step 3: Cross multiply
    18,554.03x = 25,581.99 × 12,893.48
  4. Step 4: Simplify right side
    18,554.03x = 329,840,748.52
  5. Step 5: Solve for x
    x = 329,840,748.52/18,554.03
  6. Step 6: Final answer
    x = 17,777.32

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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.