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Finding the Fourth Proportional to 18,856.90, 26,020.73 and 11,301.83

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Solution

The fourth proportional to 18,856.90, 26,020.73 and 11,301.83 is: 15,595.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,856.90 : 26,020.73 = 11,301.83 : x
  2. Step 2: Convert to fraction form
    18,856.90/26,020.73 = 11,301.83/x
  3. Step 3: Cross multiply
    18,856.90x = 26,020.73 × 11,301.83
  4. Step 4: Simplify right side
    18,856.90x = 294,081,680.32
  5. Step 5: Solve for x
    x = 294,081,680.32/18,856.90
  6. Step 6: Final answer
    x = 15,595.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.