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Finding the Fourth Proportional to 111,942.48, 154,475.08 and 61,632.08

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Solution

The fourth proportional to 111,942.48, 154,475.08 and 61,632.08 is: 85,049.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,942.48 : 154,475.08 = 61,632.08 : x
  2. Step 2: Convert to fraction form
    111,942.48/154,475.08 = 61,632.08/x
  3. Step 3: Cross multiply
    111,942.48x = 154,475.08 × 61,632.08
  4. Step 4: Simplify right side
    111,942.48x = 9,520,620,488.57
  5. Step 5: Solve for x
    x = 9,520,620,488.57/111,942.48
  6. Step 6: Final answer
    x = 85,049.22

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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.