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Finding the Fourth Proportional to 111,243.78, 153,515.52 and 60,255.36

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Solution

The fourth proportional to 111,243.78, 153,515.52 and 60,255.36 is: 83,151.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,243.78 : 153,515.52 = 60,255.36 : x
  2. Step 2: Convert to fraction form
    111,243.78/153,515.52 = 60,255.36/x
  3. Step 3: Cross multiply
    111,243.78x = 153,515.52 × 60,255.36
  4. Step 4: Simplify right side
    111,243.78x = 9,250,132,923.19
  5. Step 5: Solve for x
    x = 9,250,132,923.19/111,243.78
  6. Step 6: Final answer
    x = 83,151.91

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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.