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Finding the Fourth Proportional to 808,911, 1,116,297.18 and 451,215

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Solution

The fourth proportional to 808,911, 1,116,297.18 and 451,215 is: 622,676.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,911 : 1,116,297.18 = 451,215 : x
  2. Step 2: Convert to fraction form
    808,911/1,116,297.18 = 451,215/x
  3. Step 3: Cross multiply
    808,911x = 1,116,297.18 × 451,215
  4. Step 4: Simplify right side
    808,911x = 503,690,032,073.70
  5. Step 5: Solve for x
    x = 503,690,032,073.70/808,911
  6. Step 6: Final answer
    x = 622,676.70

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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.