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Finding the Fourth Proportional to 185,818.56, 256,288.32 and 128,553.16

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Solution

The fourth proportional to 185,818.56, 256,288.32 and 128,553.16 is: 177,305.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,818.56 : 256,288.32 = 128,553.16 : x
  2. Step 2: Convert to fraction form
    185,818.56/256,288.32 = 128,553.16/x
  3. Step 3: Cross multiply
    185,818.56x = 256,288.32 × 128,553.16
  4. Step 4: Simplify right side
    185,818.56x = 32,946,673,407.09
  5. Step 5: Solve for x
    x = 32,946,673,407.09/185,818.56
  6. Step 6: Final answer
    x = 177,305.61

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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.