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Finding the Fourth Proportional to 629,865.30, 944,797.95 and 393,669.30

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Solution

The fourth proportional to 629,865.30, 944,797.95 and 393,669.30 is: 590,503.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,865.30 : 944,797.95 = 393,669.30 : x
  2. Step 2: Convert to fraction form
    629,865.30/944,797.95 = 393,669.30/x
  3. Step 3: Cross multiply
    629,865.30x = 944,797.95 × 393,669.30
  4. Step 4: Simplify right side
    629,865.30x = 371,937,947,617.94
  5. Step 5: Solve for x
    x = 371,937,947,617.94/629,865.30
  6. Step 6: Final answer
    x = 590,503.95

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Half scale
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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.