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Finding the Fourth Proportional to 111,637.59, 154,073.30 and 63,889.91

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Solution

The fourth proportional to 111,637.59, 154,073.30 and 63,889.91 is: 88,175.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,637.59 : 154,073.30 = 63,889.91 : x
  2. Step 2: Convert to fraction form
    111,637.59/154,073.30 = 63,889.91/x
  3. Step 3: Cross multiply
    111,637.59x = 154,073.30 × 63,889.91
  4. Step 4: Simplify right side
    111,637.59x = 9,843,729,270.40
  5. Step 5: Solve for x
    x = 9,843,729,270.40/111,637.59
  6. Step 6: Final answer
    x = 88,175.76

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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.