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Finding the Fourth Proportional to 172,441.80, 257,139.81 and 151,467.66

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Solution

The fourth proportional to 172,441.80, 257,139.81 and 151,467.66 is: 225,863.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,441.80 : 257,139.81 = 151,467.66 : x
  2. Step 2: Convert to fraction form
    172,441.80/257,139.81 = 151,467.66/x
  3. Step 3: Cross multiply
    172,441.80x = 257,139.81 × 151,467.66
  4. Step 4: Simplify right side
    172,441.80x = 38,948,365,313.54
  5. Step 5: Solve for x
    x = 38,948,365,313.54/172,441.80
  6. Step 6: Final answer
    x = 225,863.83

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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.