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Finding the Fourth Proportional to 111,404.97, 153,736.14 and 63,655.23

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Solution

The fourth proportional to 111,404.97, 153,736.14 and 63,655.23 is: 87,842.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,404.97 : 153,736.14 = 63,655.23 : x
  2. Step 2: Convert to fraction form
    111,404.97/153,736.14 = 63,655.23/x
  3. Step 3: Cross multiply
    111,404.97x = 153,736.14 × 63,655.23
  4. Step 4: Simplify right side
    111,404.97x = 9,786,109,351.01
  5. Step 5: Solve for x
    x = 9,786,109,351.01/111,404.97
  6. Step 6: Final answer
    x = 87,842.66

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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.