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Finding the Fourth Proportional to 120,804.45, 166,695.04 and 67,082.16

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Solution

The fourth proportional to 120,804.45, 166,695.04 and 67,082.16 is: 92,565.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,804.45 : 166,695.04 = 67,082.16 : x
  2. Step 2: Convert to fraction form
    120,804.45/166,695.04 = 67,082.16/x
  3. Step 3: Cross multiply
    120,804.45x = 166,695.04 × 67,082.16
  4. Step 4: Simplify right side
    120,804.45x = 11,182,263,344.49
  5. Step 5: Solve for x
    x = 11,182,263,344.49/120,804.45
  6. Step 6: Final answer
    x = 92,565.00

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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.