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Finding the Fourth Proportional to 906,919.80, 1,361,691.90 and 683,845.80

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Solution

The fourth proportional to 906,919.80, 1,361,691.90 and 683,845.80 is: 1,026,758.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,919.80 : 1,361,691.90 = 683,845.80 : x
  2. Step 2: Convert to fraction form
    906,919.80/1,361,691.90 = 683,845.80/x
  3. Step 3: Cross multiply
    906,919.80x = 1,361,691.90 × 683,845.80
  4. Step 4: Simplify right side
    906,919.80x = 931,187,286,709.02
  5. Step 5: Solve for x
    x = 931,187,286,709.02/906,919.80
  6. Step 6: Final answer
    x = 1,026,758.14

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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.