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Finding the Fourth Proportional to 185,273.46, 255,678.27 and 100,390.50

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Solution

The fourth proportional to 185,273.46, 255,678.27 and 100,390.50 is: 138,539.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,273.46 : 255,678.27 = 100,390.50 : x
  2. Step 2: Convert to fraction form
    185,273.46/255,678.27 = 100,390.50/x
  3. Step 3: Cross multiply
    185,273.46x = 255,678.27 × 100,390.50
  4. Step 4: Simplify right side
    185,273.46x = 25,667,669,364.44
  5. Step 5: Solve for x
    x = 25,667,669,364.44/185,273.46
  6. Step 6: Final answer
    x = 138,539.38

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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.