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Finding the Fourth Proportional to 353,019.30, 487,169.90 and 191,874.74

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Solution

The fourth proportional to 353,019.30, 487,169.90 and 191,874.74 is: 264,788.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,019.30 : 487,169.90 = 191,874.74 : x
  2. Step 2: Convert to fraction form
    353,019.30/487,169.90 = 191,874.74/x
  3. Step 3: Cross multiply
    353,019.30x = 487,169.90 × 191,874.74
  4. Step 4: Simplify right side
    353,019.30x = 93,475,597,898.33
  5. Step 5: Solve for x
    x = 93,475,597,898.33/353,019.30
  6. Step 6: Final answer
    x = 264,788.92

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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.