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Finding the Fourth Proportional to 352,435.27, 486,347.64 and 191,286.87

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Solution

The fourth proportional to 352,435.27, 486,347.64 and 191,286.87 is: 263,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,435.27 : 486,347.64 = 191,286.87 : x
  2. Step 2: Convert to fraction form
    352,435.27/486,347.64 = 191,286.87/x
  3. Step 3: Cross multiply
    352,435.27x = 486,347.64 × 191,286.87
  4. Step 4: Simplify right side
    352,435.27x = 93,031,916,322.35
  5. Step 5: Solve for x
    x = 93,031,916,322.35/352,435.27
  6. Step 6: Final answer
    x = 263,968.80

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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.