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Finding the Fourth Proportional to 110,957.40, 166,436.10 and 66,561.30

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Solution

The fourth proportional to 110,957.40, 166,436.10 and 66,561.30 is: 99,841.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,957.40 : 166,436.10 = 66,561.30 : x
  2. Step 2: Convert to fraction form
    110,957.40/166,436.10 = 66,561.30/x
  3. Step 3: Cross multiply
    110,957.40x = 166,436.10 × 66,561.30
  4. Step 4: Simplify right side
    110,957.40x = 11,078,203,182.93
  5. Step 5: Solve for x
    x = 11,078,203,182.93/110,957.40
  6. Step 6: Final answer
    x = 99,841.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.