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Finding the Fourth Proportional to 636,661.11, 878,717.16 and 364,911.18

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Solution

The fourth proportional to 636,661.11, 878,717.16 and 364,911.18 is: 503,648.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,661.11 : 878,717.16 = 364,911.18 : x
  2. Step 2: Convert to fraction form
    636,661.11/878,717.16 = 364,911.18/x
  3. Step 3: Cross multiply
    636,661.11x = 878,717.16 × 364,911.18
  4. Step 4: Simplify right side
    636,661.11x = 320,653,712,446.66
  5. Step 5: Solve for x
    x = 320,653,712,446.66/636,661.11
  6. Step 6: Final answer
    x = 503,648.97

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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.