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Finding the Fourth Proportional to 111,539.88, 153,919.78 and 60,551.48

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Solution

The fourth proportional to 111,539.88, 153,919.78 and 60,551.48 is: 83,558.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,539.88 : 153,919.78 = 60,551.48 : x
  2. Step 2: Convert to fraction form
    111,539.88/153,919.78 = 60,551.48/x
  3. Step 3: Cross multiply
    111,539.88x = 153,919.78 × 60,551.48
  4. Step 4: Simplify right side
    111,539.88x = 9,320,070,480.27
  5. Step 5: Solve for x
    x = 9,320,070,480.27/111,539.88
  6. Step 6: Final answer
    x = 83,558.19

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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.