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Finding the Fourth Proportional to 120,957.59, 166,943.30 and 69,963.23

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Solution

The fourth proportional to 120,957.59, 166,943.30 and 69,963.23 is: 96,561.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,957.59 : 166,943.30 = 69,963.23 : x
  2. Step 2: Convert to fraction form
    120,957.59/166,943.30 = 69,963.23/x
  3. Step 3: Cross multiply
    120,957.59x = 166,943.30 × 69,963.23
  4. Step 4: Simplify right side
    120,957.59x = 11,679,892,562.40
  5. Step 5: Solve for x
    x = 11,679,892,562.40/120,957.59
  6. Step 6: Final answer
    x = 96,561.88

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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.