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Finding the Fourth Proportional to 666,379.41, 919,601.00 and 360,456.68

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Solution

The fourth proportional to 666,379.41, 919,601.00 and 360,456.68 is: 497,428.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,379.41 : 919,601.00 = 360,456.68 : x
  2. Step 2: Convert to fraction form
    666,379.41/919,601.00 = 360,456.68/x
  3. Step 3: Cross multiply
    666,379.41x = 919,601.00 × 360,456.68
  4. Step 4: Simplify right side
    666,379.41x = 331,476,325,233.11
  5. Step 5: Solve for x
    x = 331,476,325,233.11/666,379.41
  6. Step 6: Final answer
    x = 497,428.83

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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.