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Finding the Fourth Proportional to 110,129.80, 151,894.56 and 74,263

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Solution

The fourth proportional to 110,129.80, 151,894.56 and 74,263 is: 102,425.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,129.80 : 151,894.56 = 74,263 : x
  2. Step 2: Convert to fraction form
    110,129.80/151,894.56 = 74,263/x
  3. Step 3: Cross multiply
    110,129.80x = 151,894.56 × 74,263
  4. Step 4: Simplify right side
    110,129.80x = 11,280,145,709.28
  5. Step 5: Solve for x
    x = 11,280,145,709.28/110,129.80
  6. Step 6: Final answer
    x = 102,425.92

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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.