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Finding the Fourth Proportional to 705,103.97, 973,103.72 and 399,234.24

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Solution

The fourth proportional to 705,103.97, 973,103.72 and 399,234.24 is: 550,977.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,103.97 : 973,103.72 = 399,234.24 : x
  2. Step 2: Convert to fraction form
    705,103.97/973,103.72 = 399,234.24/x
  3. Step 3: Cross multiply
    705,103.97x = 973,103.72 × 399,234.24
  4. Step 4: Simplify right side
    705,103.97x = 388,496,322,099.20
  5. Step 5: Solve for x
    x = 388,496,322,099.20/705,103.97
  6. Step 6: Final answer
    x = 550,977.36

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.