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Finding the Fourth Proportional to 117,327.84, 161,874.36 and 66,335.64

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Solution

The fourth proportional to 117,327.84, 161,874.36 and 66,335.64 is: 91,521.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,327.84 : 161,874.36 = 66,335.64 : x
  2. Step 2: Convert to fraction form
    117,327.84/161,874.36 = 66,335.64/x
  3. Step 3: Cross multiply
    117,327.84x = 161,874.36 × 66,335.64
  4. Step 4: Simplify right side
    117,327.84x = 10,738,039,270.19
  5. Step 5: Solve for x
    x = 10,738,039,270.19/117,327.84
  6. Step 6: Final answer
    x = 91,521.67

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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.