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Finding the Fourth Proportional to 456,674.24, 629,794.18 and 392,123.23

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Solution

The fourth proportional to 456,674.24, 629,794.18 and 392,123.23 is: 540,772.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,674.24 : 629,794.18 = 392,123.23 : x
  2. Step 2: Convert to fraction form
    456,674.24/629,794.18 = 392,123.23/x
  3. Step 3: Cross multiply
    456,674.24x = 629,794.18 × 392,123.23
  4. Step 4: Simplify right side
    456,674.24x = 246,956,928,096.80
  5. Step 5: Solve for x
    x = 246,956,928,096.80/456,674.24
  6. Step 6: Final answer
    x = 540,772.63

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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.