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Finding the Fourth Proportional to 457,246.90, 629,561.11 and 388,199.79

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Solution

The fourth proportional to 457,246.90, 629,561.11 and 388,199.79 is: 534,493.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,246.90 : 629,561.11 = 388,199.79 : x
  2. Step 2: Convert to fraction form
    457,246.90/629,561.11 = 388,199.79/x
  3. Step 3: Cross multiply
    457,246.90x = 629,561.11 × 388,199.79
  4. Step 4: Simplify right side
    457,246.90x = 244,395,494,676.39
  5. Step 5: Solve for x
    x = 244,395,494,676.39/457,246.90
  6. Step 6: Final answer
    x = 534,493.50

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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.