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Finding the Fourth Proportional to 111,544.92, 153,930.24 and 61,243.92

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Solution

The fourth proportional to 111,544.92, 153,930.24 and 61,243.92 is: 84,515.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,544.92 : 153,930.24 = 61,243.92 : x
  2. Step 2: Convert to fraction form
    111,544.92/153,930.24 = 61,243.92/x
  3. Step 3: Cross multiply
    111,544.92x = 153,930.24 × 61,243.92
  4. Step 4: Simplify right side
    111,544.92x = 9,427,291,304.14
  5. Step 5: Solve for x
    x = 9,427,291,304.14/111,544.92
  6. Step 6: Final answer
    x = 84,515.65

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1.5x scale

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.