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Finding the Fourth Proportional to 1,086,815.70, 1,630,223.55 and 834,581.70

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Solution

The fourth proportional to 1,086,815.70, 1,630,223.55 and 834,581.70 is: 1,251,872.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,815.70 : 1,630,223.55 = 834,581.70 : x
  2. Step 2: Convert to fraction form
    1,086,815.70/1,630,223.55 = 834,581.70/x
  3. Step 3: Cross multiply
    1,086,815.70x = 1,630,223.55 × 834,581.70
  4. Step 4: Simplify right side
    1,086,815.70x = 1,360,554,741,739.03
  5. Step 5: Solve for x
    x = 1,360,554,741,739.03/1,086,815.70
  6. Step 6: Final answer
    x = 1,251,872.55

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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.