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Finding the Fourth Proportional to 308,761.38, 426,081.54 and 170,946.44

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Solution

The fourth proportional to 308,761.38, 426,081.54 and 170,946.44 is: 235,901.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,761.38 : 426,081.54 = 170,946.44 : x
  2. Step 2: Convert to fraction form
    308,761.38/426,081.54 = 170,946.44/x
  3. Step 3: Cross multiply
    308,761.38x = 426,081.54 × 170,946.44
  4. Step 4: Simplify right side
    308,761.38x = 72,837,122,339.96
  5. Step 5: Solve for x
    x = 72,837,122,339.96/308,761.38
  6. Step 6: Final answer
    x = 235,901.01

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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.