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Finding the Fourth Proportional to 641,940.04, 886,800.03 and 512,708.86

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Solution

The fourth proportional to 641,940.04, 886,800.03 and 512,708.86 is: 708,275.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,940.04 : 886,800.03 = 512,708.86 : x
  2. Step 2: Convert to fraction form
    641,940.04/886,800.03 = 512,708.86/x
  3. Step 3: Cross multiply
    641,940.04x = 886,800.03 × 512,708.86
  4. Step 4: Simplify right side
    641,940.04x = 454,670,230,385.54
  5. Step 5: Solve for x
    x = 454,670,230,385.54/641,940.04
  6. Step 6: Final answer
    x = 708,275.23

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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.