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Finding the Fourth Proportional to 18,581.67, 25,638.67 and 11,030.49

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Solution

The fourth proportional to 18,581.67, 25,638.67 and 11,030.49 is: 15,219.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.67 : 25,638.67 = 11,030.49 : x
  2. Step 2: Convert to fraction form
    18,581.67/25,638.67 = 11,030.49/x
  3. Step 3: Cross multiply
    18,581.67x = 25,638.67 × 11,030.49
  4. Step 4: Simplify right side
    18,581.67x = 282,807,093.05
  5. Step 5: Solve for x
    x = 282,807,093.05/18,581.67
  6. Step 6: Final answer
    x = 15,219.68

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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.