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Finding the Fourth Proportional to 641,940.17, 886,800.17 and 512,708.98

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Solution

The fourth proportional to 641,940.17, 886,800.17 and 512,708.98 is: 708,275.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,940.17 : 886,800.17 = 512,708.98 : x
  2. Step 2: Convert to fraction form
    641,940.17/886,800.17 = 512,708.98/x
  3. Step 3: Cross multiply
    641,940.17x = 886,800.17 × 512,708.98
  4. Step 4: Simplify right side
    641,940.17x = 454,670,409,689.30
  5. Step 5: Solve for x
    x = 454,670,409,689.30/641,940.17
  6. Step 6: Final answer
    x = 708,275.37

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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.