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Finding the Fourth Proportional to 353,021.14, 487,172.16 and 191,876.16

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Solution

The fourth proportional to 353,021.14, 487,172.16 and 191,876.16 is: 264,790.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,021.14 : 487,172.16 = 191,876.16 : x
  2. Step 2: Convert to fraction form
    353,021.14/487,172.16 = 191,876.16/x
  3. Step 3: Cross multiply
    353,021.14x = 487,172.16 × 191,876.16
  4. Step 4: Simplify right side
    353,021.14x = 93,476,722,360.32
  5. Step 5: Solve for x
    x = 93,476,722,360.32/353,021.14
  6. Step 6: Final answer
    x = 264,790.73

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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.