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Finding the Fourth Proportional to 111,436.73, 153,745.29 and 63,656.25

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Solution

The fourth proportional to 111,436.73, 153,745.29 and 63,656.25 is: 87,824.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,436.73 : 153,745.29 = 63,656.25 : x
  2. Step 2: Convert to fraction form
    111,436.73/153,745.29 = 63,656.25/x
  3. Step 3: Cross multiply
    111,436.73x = 153,745.29 × 63,656.25
  4. Step 4: Simplify right side
    111,436.73x = 9,786,848,616.56
  5. Step 5: Solve for x
    x = 9,786,848,616.56/111,436.73
  6. Step 6: Final answer
    x = 87,824.26

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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.