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Finding the Fourth Proportional to 185,578.80, 256,096.80 and 100,696.20

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Solution

The fourth proportional to 185,578.80, 256,096.80 and 100,696.20 is: 138,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,578.80 : 256,096.80 = 100,696.20 : x
  2. Step 2: Convert to fraction form
    185,578.80/256,096.80 = 100,696.20/x
  3. Step 3: Cross multiply
    185,578.80x = 256,096.80 × 100,696.20
  4. Step 4: Simplify right side
    185,578.80x = 25,787,974,592.16
  5. Step 5: Solve for x
    x = 25,787,974,592.16/185,578.80
  6. Step 6: Final answer
    x = 138,959.70

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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.