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Finding the Fourth Proportional to 110,988.34, 153,163.54 and 63,249.77

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Solution

The fourth proportional to 110,988.34, 153,163.54 and 63,249.77 is: 87,284.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,988.34 : 153,163.54 = 63,249.77 : x
  2. Step 2: Convert to fraction form
    110,988.34/153,163.54 = 63,249.77/x
  3. Step 3: Cross multiply
    110,988.34x = 153,163.54 × 63,249.77
  4. Step 4: Simplify right side
    110,988.34x = 9,687,559,139.36
  5. Step 5: Solve for x
    x = 9,687,559,139.36/110,988.34
  6. Step 6: Final answer
    x = 87,284.48

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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.