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Finding the Fourth Proportional to 633,550.64, 873,968.28 and 391,755.92

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Solution

The fourth proportional to 633,550.64, 873,968.28 and 391,755.92 is: 540,418.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,550.64 : 873,968.28 = 391,755.92 : x
  2. Step 2: Convert to fraction form
    633,550.64/873,968.28 = 391,755.92/x
  3. Step 3: Cross multiply
    633,550.64x = 873,968.28 × 391,755.92
  4. Step 4: Simplify right side
    633,550.64x = 342,382,247,582.22
  5. Step 5: Solve for x
    x = 342,382,247,582.22/633,550.64
  6. Step 6: Final answer
    x = 540,418.12

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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.