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Finding the Fourth Proportional to 111,865.11, 154,339.06 and 63,459.06

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Solution

The fourth proportional to 111,865.11, 154,339.06 and 63,459.06 is: 87,553.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,865.11 : 154,339.06 = 63,459.06 : x
  2. Step 2: Convert to fraction form
    111,865.11/154,339.06 = 63,459.06/x
  3. Step 3: Cross multiply
    111,865.11x = 154,339.06 × 63,459.06
  4. Step 4: Simplify right side
    111,865.11x = 9,794,211,668.88
  5. Step 5: Solve for x
    x = 9,794,211,668.88/111,865.11
  6. Step 6: Final answer
    x = 87,553.77

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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.