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Finding the Fourth Proportional to 621,843, 932,710.76 and 378,620.92

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Solution

The fourth proportional to 621,843, 932,710.76 and 378,620.92 is: 567,898.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,843 : 932,710.76 = 378,620.92 : x
  2. Step 2: Convert to fraction form
    621,843/932,710.76 = 378,620.92/x
  3. Step 3: Cross multiply
    621,843x = 932,710.76 × 378,620.92
  4. Step 4: Simplify right side
    621,843x = 353,143,806,045.10
  5. Step 5: Solve for x
    x = 353,143,806,045.10/621,843
  6. Step 6: Final answer
    x = 567,898.66

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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.