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Finding the Fourth Proportional to 185,428.92, 255,934.26 and 108,957

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Solution

The fourth proportional to 185,428.92, 255,934.26 and 108,957 is: 150,385.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,428.92 : 255,934.26 = 108,957 : x
  2. Step 2: Convert to fraction form
    185,428.92/255,934.26 = 108,957/x
  3. Step 3: Cross multiply
    185,428.92x = 255,934.26 × 108,957
  4. Step 4: Simplify right side
    185,428.92x = 27,885,829,166.82
  5. Step 5: Solve for x
    x = 27,885,829,166.82/185,428.92
  6. Step 6: Final answer
    x = 150,385.54

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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.