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Finding the Fourth Proportional to 111,607.35, 153,974.71 and 63,198.16

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Solution

The fourth proportional to 111,607.35, 153,974.71 and 63,198.16 is: 87,188.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,607.35 : 153,974.71 = 63,198.16 : x
  2. Step 2: Convert to fraction form
    111,607.35/153,974.71 = 63,198.16/x
  3. Step 3: Cross multiply
    111,607.35x = 153,974.71 × 63,198.16
  4. Step 4: Simplify right side
    111,607.35x = 9,730,918,358.53
  5. Step 5: Solve for x
    x = 9,730,918,358.53/111,607.35
  6. Step 6: Final answer
    x = 87,188.87

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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.