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Finding the Fourth Proportional to 171,161.30, 256,802.78 and 76,382.87

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Solution

The fourth proportional to 171,161.30, 256,802.78 and 76,382.87 is: 114,601.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,161.30 : 256,802.78 = 76,382.87 : x
  2. Step 2: Convert to fraction form
    171,161.30/256,802.78 = 76,382.87/x
  3. Step 3: Cross multiply
    171,161.30x = 256,802.78 × 76,382.87
  4. Step 4: Simplify right side
    171,161.30x = 19,615,332,267.32
  5. Step 5: Solve for x
    x = 19,615,332,267.32/171,161.30
  6. Step 6: Final answer
    x = 114,601.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.