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Finding the Fourth Proportional to 185,772.76, 256,364.16 and 100,890.40

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Solution

The fourth proportional to 185,772.76, 256,364.16 and 100,890.40 is: 139,227.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,772.76 : 256,364.16 = 100,890.40 : x
  2. Step 2: Convert to fraction form
    185,772.76/256,364.16 = 100,890.40/x
  3. Step 3: Cross multiply
    185,772.76x = 256,364.16 × 100,890.40
  4. Step 4: Simplify right side
    185,772.76x = 25,864,682,648.06
  5. Step 5: Solve for x
    x = 25,864,682,648.06/185,772.76
  6. Step 6: Final answer
    x = 139,227.53

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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.