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Finding the Fourth Proportional to 451,248.57, 622,740.29 and 257,687.87

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Solution

The fourth proportional to 451,248.57, 622,740.29 and 257,687.87 is: 355,619.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,248.57 : 622,740.29 = 257,687.87 : x
  2. Step 2: Convert to fraction form
    451,248.57/622,740.29 = 257,687.87/x
  3. Step 3: Cross multiply
    451,248.57x = 622,740.29 × 257,687.87
  4. Step 4: Simplify right side
    451,248.57x = 160,472,614,491.14
  5. Step 5: Solve for x
    x = 160,472,614,491.14/451,248.57
  6. Step 6: Final answer
    x = 355,619.11

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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.