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Finding the Fourth Proportional to 185,818.92, 256,424.67 and 100,935.78

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Solution

The fourth proportional to 185,818.92, 256,424.67 and 100,935.78 is: 139,288.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,818.92 : 256,424.67 = 100,935.78 : x
  2. Step 2: Convert to fraction form
    185,818.92/256,424.67 = 100,935.78/x
  3. Step 3: Cross multiply
    185,818.92x = 256,424.67 × 100,935.78
  4. Step 4: Simplify right side
    185,818.92x = 25,882,424,077.69
  5. Step 5: Solve for x
    x = 25,882,424,077.69/185,818.92
  6. Step 6: Final answer
    x = 139,288.42

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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.