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Finding the Fourth Proportional to 111,866, 154,375.12 and 61,563.92

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Solution

The fourth proportional to 111,866, 154,375.12 and 61,563.92 is: 84,958.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,866 : 154,375.12 = 61,563.92 : x
  2. Step 2: Convert to fraction form
    111,866/154,375.12 = 61,563.92/x
  3. Step 3: Cross multiply
    111,866x = 154,375.12 × 61,563.92
  4. Step 4: Simplify right side
    111,866x = 9,503,937,537.67
  5. Step 5: Solve for x
    x = 9,503,937,537.67/111,866
  6. Step 6: Final answer
    x = 84,958.23

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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.