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Finding the Fourth Proportional to 530,711.70, 796,067.55 and 198,417.30

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Solution

The fourth proportional to 530,711.70, 796,067.55 and 198,417.30 is: 297,625.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,711.70 : 796,067.55 = 198,417.30 : x
  2. Step 2: Convert to fraction form
    530,711.70/796,067.55 = 198,417.30/x
  3. Step 3: Cross multiply
    530,711.70x = 796,067.55 × 198,417.30
  4. Step 4: Simplify right side
    530,711.70x = 157,953,573,888.62
  5. Step 5: Solve for x
    x = 157,953,573,888.62/530,711.70
  6. Step 6: Final answer
    x = 297,625.95

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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.