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Finding the Fourth Proportional to 111,845.81, 154,347.22 and 61,544.81

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Solution

The fourth proportional to 111,845.81, 154,347.22 and 61,544.81 is: 84,931.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,845.81 : 154,347.22 = 61,544.81 : x
  2. Step 2: Convert to fraction form
    111,845.81/154,347.22 = 61,544.81/x
  3. Step 3: Cross multiply
    111,845.81x = 154,347.22 × 61,544.81
  4. Step 4: Simplify right side
    111,845.81x = 9,499,270,791.73
  5. Step 5: Solve for x
    x = 9,499,270,791.73/111,845.81
  6. Step 6: Final answer
    x = 84,931.84

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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.