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Finding the Fourth Proportional to 592,640.97, 817,844.51 and 320,708.86

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Solution

The fourth proportional to 592,640.97, 817,844.51 and 320,708.86 is: 442,578.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,640.97 : 817,844.51 = 320,708.86 : x
  2. Step 2: Convert to fraction form
    592,640.97/817,844.51 = 320,708.86/x
  3. Step 3: Cross multiply
    592,640.97x = 817,844.51 × 320,708.86
  4. Step 4: Simplify right side
    592,640.97x = 262,289,979,216.52
  5. Step 5: Solve for x
    x = 262,289,979,216.52/592,640.97
  6. Step 6: Final answer
    x = 442,578.21

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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.