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Finding the Fourth Proportional to 1,679,789.64, 2,318,306.50 and 954,746.34

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Solution

The fourth proportional to 1,679,789.64, 2,318,306.50 and 954,746.34 is: 1,317,661.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679,789.64 : 2,318,306.50 = 954,746.34 : x
  2. Step 2: Convert to fraction form
    1,679,789.64/2,318,306.50 = 954,746.34/x
  3. Step 3: Cross multiply
    1,679,789.64x = 2,318,306.50 × 954,746.34
  4. Step 4: Simplify right side
    1,679,789.64x = 2,213,394,647,385.68
  5. Step 5: Solve for x
    x = 2,213,394,647,385.68/1,679,789.64
  6. Step 6: Final answer
    x = 1,317,661.81

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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.