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Finding the Fourth Proportional to 352,449.90, 486,367.74 and 191,301.48

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Solution

The fourth proportional to 352,449.90, 486,367.74 and 191,301.48 is: 263,988.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,449.90 : 486,367.74 = 191,301.48 : x
  2. Step 2: Convert to fraction form
    352,449.90/486,367.74 = 191,301.48/x
  3. Step 3: Cross multiply
    352,449.90x = 486,367.74 × 191,301.48
  4. Step 4: Simplify right side
    352,449.90x = 93,042,868,486.26
  5. Step 5: Solve for x
    x = 93,042,868,486.26/352,449.90
  6. Step 6: Final answer
    x = 263,988.92

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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.