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Finding the Fourth Proportional to 172,240.40, 256,999.78 and 148,912.40

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Solution

The fourth proportional to 172,240.40, 256,999.78 and 148,912.40 is: 222,192.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,240.40 : 256,999.78 = 148,912.40 : x
  2. Step 2: Convert to fraction form
    172,240.40/256,999.78 = 148,912.40/x
  3. Step 3: Cross multiply
    172,240.40x = 256,999.78 × 148,912.40
  4. Step 4: Simplify right side
    172,240.40x = 38,270,454,039.27
  5. Step 5: Solve for x
    x = 38,270,454,039.27/172,240.40
  6. Step 6: Final answer
    x = 222,192.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.