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Finding the Fourth Proportional to 111,119.59, 153,347.66 and 63,371.91

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Solution

The fourth proportional to 111,119.59, 153,347.66 and 63,371.91 is: 87,454.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,119.59 : 153,347.66 = 63,371.91 : x
  2. Step 2: Convert to fraction form
    111,119.59/153,347.66 = 63,371.91/x
  3. Step 3: Cross multiply
    111,119.59x = 153,347.66 × 63,371.91
  4. Step 4: Simplify right side
    111,119.59x = 9,717,933,791.37
  5. Step 5: Solve for x
    x = 9,717,933,791.37/111,119.59
  6. Step 6: Final answer
    x = 87,454.73

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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.