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Finding the Fourth Proportional to 329,755.75, 455,062.97 and 186,512.71

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Solution

The fourth proportional to 329,755.75, 455,062.97 and 186,512.71 is: 257,387.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,755.75 : 455,062.97 = 186,512.71 : x
  2. Step 2: Convert to fraction form
    329,755.75/455,062.97 = 186,512.71/x
  3. Step 3: Cross multiply
    329,755.75x = 455,062.97 × 186,512.71
  4. Step 4: Simplify right side
    329,755.75x = 84,875,026,822.79
  5. Step 5: Solve for x
    x = 84,875,026,822.79/329,755.75
  6. Step 6: Final answer
    x = 257,387.56

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1.5x scale

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.