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Finding the Fourth Proportional to 81,767.17, 122,650.71 and 21,795.67

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Solution

The fourth proportional to 81,767.17, 122,650.71 and 21,795.67 is: 32,693.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,767.17 : 122,650.71 = 21,795.67 : x
  2. Step 2: Convert to fraction form
    81,767.17/122,650.71 = 21,795.67/x
  3. Step 3: Cross multiply
    81,767.17x = 122,650.71 × 21,795.67
  4. Step 4: Simplify right side
    81,767.17x = 2,673,254,400.43
  5. Step 5: Solve for x
    x = 2,673,254,400.43/81,767.17
  6. Step 6: Final answer
    x = 32,693.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.