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Finding the Fourth Proportional to 185,853.92, 256,479.36 and 100,971.20

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Solution

The fourth proportional to 185,853.92, 256,479.36 and 100,971.20 is: 139,340.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,853.92 : 256,479.36 = 100,971.20 : x
  2. Step 2: Convert to fraction form
    185,853.92/256,479.36 = 100,971.20/x
  3. Step 3: Cross multiply
    185,853.92x = 256,479.36 × 100,971.20
  4. Step 4: Simplify right side
    185,853.92x = 25,897,028,754.43
  5. Step 5: Solve for x
    x = 25,897,028,754.43/185,853.92
  6. Step 6: Final answer
    x = 139,340.77

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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.