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Finding the Fourth Proportional to 120,798.64, 166,701.72 and 67,082.32

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Solution

The fourth proportional to 120,798.64, 166,701.72 and 67,082.32 is: 92,573.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,798.64 : 166,701.72 = 67,082.32 : x
  2. Step 2: Convert to fraction form
    120,798.64/166,701.72 = 67,082.32/x
  3. Step 3: Cross multiply
    120,798.64x = 166,701.72 × 67,082.32
  4. Step 4: Simplify right side
    120,798.64x = 11,182,738,125.59
  5. Step 5: Solve for x
    x = 11,182,738,125.59/120,798.64
  6. Step 6: Final answer
    x = 92,573.38

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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.