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Finding the Fourth Proportional to 911,391.62, 1,257,714.46 and 503,519.77

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Solution

The fourth proportional to 911,391.62, 1,257,714.46 and 503,519.77 is: 694,853.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,391.62 : 1,257,714.46 = 503,519.77 : x
  2. Step 2: Convert to fraction form
    911,391.62/1,257,714.46 = 503,519.77/x
  3. Step 3: Cross multiply
    911,391.62x = 1,257,714.46 × 503,519.77
  4. Step 4: Simplify right side
    911,391.62x = 633,284,093,109.99
  5. Step 5: Solve for x
    x = 633,284,093,109.99/911,391.62
  6. Step 6: Final answer
    x = 694,853.98

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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.