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Finding the Fourth Proportional to 629,939.40, 944,909.10 and 364,218.90

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Solution

The fourth proportional to 629,939.40, 944,909.10 and 364,218.90 is: 546,328.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,939.40 : 944,909.10 = 364,218.90 : x
  2. Step 2: Convert to fraction form
    629,939.40/944,909.10 = 364,218.90/x
  3. Step 3: Cross multiply
    629,939.40x = 944,909.10 × 364,218.90
  4. Step 4: Simplify right side
    629,939.40x = 344,153,753,001.99
  5. Step 5: Solve for x
    x = 344,153,753,001.99/629,939.40
  6. Step 6: Final answer
    x = 546,328.35

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Double scale
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Similar ratio
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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.