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Finding the Fourth Proportional to 120,510.88, 166,302.18 and 69,523.72

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Solution

The fourth proportional to 120,510.88, 166,302.18 and 69,523.72 is: 95,941.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,510.88 : 166,302.18 = 69,523.72 : x
  2. Step 2: Convert to fraction form
    120,510.88/166,302.18 = 69,523.72/x
  3. Step 3: Cross multiply
    120,510.88x = 166,302.18 × 69,523.72
  4. Step 4: Simplify right side
    120,510.88x = 11,561,945,781.95
  5. Step 5: Solve for x
    x = 11,561,945,781.95/120,510.88
  6. Step 6: Final answer
    x = 95,941.10

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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.