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Finding the Fourth Proportional to 352,422.80, 486,343.71 and 191,277.86

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Solution

The fourth proportional to 352,422.80, 486,343.71 and 191,277.86 is: 263,963.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,422.80 : 486,343.71 = 191,277.86 : x
  2. Step 2: Convert to fraction form
    352,422.80/486,343.71 = 191,277.86/x
  3. Step 3: Cross multiply
    352,422.80x = 486,343.71 × 191,277.86
  4. Step 4: Simplify right side
    352,422.80x = 93,026,780,924.25
  5. Step 5: Solve for x
    x = 93,026,780,924.25/352,422.80
  6. Step 6: Final answer
    x = 263,963.57

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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.