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Finding the Fourth Proportional to 111,328.56, 153,634.32 and 61,027.92

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Solution

The fourth proportional to 111,328.56, 153,634.32 and 61,027.92 is: 84,219.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,328.56 : 153,634.32 = 61,027.92 : x
  2. Step 2: Convert to fraction form
    111,328.56/153,634.32 = 61,027.92/x
  3. Step 3: Cross multiply
    111,328.56x = 153,634.32 × 61,027.92
  4. Step 4: Simplify right side
    111,328.56x = 9,375,982,990.21
  5. Step 5: Solve for x
    x = 9,375,982,990.21/111,328.56
  6. Step 6: Final answer
    x = 84,219.03

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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.