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Finding the Fourth Proportional to 353,016.90, 487,166.28 and 191,871.90

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Solution

The fourth proportional to 353,016.90, 487,166.28 and 191,871.90 is: 264,784.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,016.90 : 487,166.28 = 191,871.90 : x
  2. Step 2: Convert to fraction form
    353,016.90/487,166.28 = 191,871.90/x
  3. Step 3: Cross multiply
    353,016.90x = 487,166.28 × 191,871.90
  4. Step 4: Simplify right side
    353,016.90x = 93,473,519,759.53
  5. Step 5: Solve for x
    x = 93,473,519,759.53/353,016.90
  6. Step 6: Final answer
    x = 264,784.83

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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.