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Finding the Fourth Proportional to 120,551.56, 166,353.01 and 69,566.40

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Solution

The fourth proportional to 120,551.56, 166,353.01 and 69,566.40 is: 95,996.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,551.56 : 166,353.01 = 69,566.40 : x
  2. Step 2: Convert to fraction form
    120,551.56/166,353.01 = 69,566.40/x
  3. Step 3: Cross multiply
    120,551.56x = 166,353.01 × 69,566.40
  4. Step 4: Simplify right side
    120,551.56x = 11,572,579,860.95
  5. Step 5: Solve for x
    x = 11,572,579,860.95/120,551.56
  6. Step 6: Final answer
    x = 95,996.93

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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.