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Finding the Fourth Proportional to 911,422.85, 1,257,759.45 and 503,524.76

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Solution

The fourth proportional to 911,422.85, 1,257,759.45 and 503,524.76 is: 694,861.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,422.85 : 1,257,759.45 = 503,524.76 : x
  2. Step 2: Convert to fraction form
    911,422.85/1,257,759.45 = 503,524.76/x
  3. Step 3: Cross multiply
    911,422.85x = 1,257,759.45 × 503,524.76
  4. Step 4: Simplify right side
    911,422.85x = 633,313,018,910.19
  5. Step 5: Solve for x
    x = 633,313,018,910.19/911,422.85
  6. Step 6: Final answer
    x = 694,861.91

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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.