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Finding the Fourth Proportional to 67,930.91, 101,192.43 and 66,813.11

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Solution

The fourth proportional to 67,930.91, 101,192.43 and 66,813.11 is: 99,527.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,930.91 : 101,192.43 = 66,813.11 : x
  2. Step 2: Convert to fraction form
    67,930.91/101,192.43 = 66,813.11/x
  3. Step 3: Cross multiply
    67,930.91x = 101,192.43 × 66,813.11
  4. Step 4: Simplify right side
    67,930.91x = 6,760,980,956.76
  5. Step 5: Solve for x
    x = 6,760,980,956.76/67,930.91
  6. Step 6: Final answer
    x = 99,527.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.