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Finding the Fourth Proportional to 120,554.68, 166,358.74 and 66,836.52

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Solution

The fourth proportional to 120,554.68, 166,358.74 and 66,836.52 is: 92,230.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,554.68 : 166,358.74 = 66,836.52 : x
  2. Step 2: Convert to fraction form
    120,554.68/166,358.74 = 66,836.52/x
  3. Step 3: Cross multiply
    120,554.68x = 166,358.74 × 66,836.52
  4. Step 4: Simplify right side
    120,554.68x = 11,118,839,253.18
  5. Step 5: Solve for x
    x = 11,118,839,253.18/120,554.68
  6. Step 6: Final answer
    x = 92,230.67

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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.