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Finding the Fourth Proportional to 297,005.70, 445,508.55 and 263,763.30

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Solution

The fourth proportional to 297,005.70, 445,508.55 and 263,763.30 is: 395,644.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,005.70 : 445,508.55 = 263,763.30 : x
  2. Step 2: Convert to fraction form
    297,005.70/445,508.55 = 263,763.30/x
  3. Step 3: Cross multiply
    297,005.70x = 445,508.55 × 263,763.30
  4. Step 4: Simplify right side
    297,005.70x = 117,508,805,326.22
  5. Step 5: Solve for x
    x = 117,508,805,326.22/297,005.70
  6. Step 6: Final answer
    x = 395,644.95

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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.