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Finding the Fourth Proportional to 324,091.10, 486,574.05 and 257,606.30

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Solution

The fourth proportional to 324,091.10, 486,574.05 and 257,606.30 is: 386,757.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,091.10 : 486,574.05 = 257,606.30 : x
  2. Step 2: Convert to fraction form
    324,091.10/486,574.05 = 257,606.30/x
  3. Step 3: Cross multiply
    324,091.10x = 486,574.05 × 257,606.30
  4. Step 4: Simplify right side
    324,091.10x = 125,344,540,696.52
  5. Step 5: Solve for x
    x = 125,344,540,696.52/324,091.10
  6. Step 6: Final answer
    x = 386,757.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.