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Finding the Fourth Proportional to 527,456.94, 790,656.21 and 261,410.70

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Solution

The fourth proportional to 527,456.94, 790,656.21 and 261,410.70 is: 391,853.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,456.94 : 790,656.21 = 261,410.70 : x
  2. Step 2: Convert to fraction form
    527,456.94/790,656.21 = 261,410.70/x
  3. Step 3: Cross multiply
    527,456.94x = 790,656.21 × 261,410.70
  4. Step 4: Simplify right side
    527,456.94x = 206,685,993,315.45
  5. Step 5: Solve for x
    x = 206,685,993,315.45/527,456.94
  6. Step 6: Final answer
    x = 391,853.78

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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.