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Finding the Fourth Proportional to 111,462.30, 153,817.97 and 63,716.72

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Solution

The fourth proportional to 111,462.30, 153,817.97 and 63,716.72 is: 87,929.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,462.30 : 153,817.97 = 63,716.72 : x
  2. Step 2: Convert to fraction form
    111,462.30/153,817.97 = 63,716.72/x
  3. Step 3: Cross multiply
    111,462.30x = 153,817.97 × 63,716.72
  4. Step 4: Simplify right side
    111,462.30x = 9,800,775,437.78
  5. Step 5: Solve for x
    x = 9,800,775,437.78/111,462.30
  6. Step 6: Final answer
    x = 87,929.06

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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.