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Finding the Fourth Proportional to 73,246.80, 109,870.20 and 66,467.10

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Solution

The fourth proportional to 73,246.80, 109,870.20 and 66,467.10 is: 99,700.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,246.80 : 109,870.20 = 66,467.10 : x
  2. Step 2: Convert to fraction form
    73,246.80/109,870.20 = 66,467.10/x
  3. Step 3: Cross multiply
    73,246.80x = 109,870.20 × 66,467.10
  4. Step 4: Simplify right side
    73,246.80x = 7,302,753,570.42
  5. Step 5: Solve for x
    x = 7,302,753,570.42/73,246.80
  6. Step 6: Final answer
    x = 99,700.65

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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.