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Finding the Fourth Proportional to 353,528.40, 487,879.46 and 192,393.84

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Solution

The fourth proportional to 353,528.40, 487,879.46 and 192,393.84 is: 265,509.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,528.40 : 487,879.46 = 192,393.84 : x
  2. Step 2: Convert to fraction form
    353,528.40/487,879.46 = 192,393.84/x
  3. Step 3: Cross multiply
    353,528.40x = 487,879.46 × 192,393.84
  4. Step 4: Simplify right side
    353,528.40x = 93,865,002,766.53
  5. Step 5: Solve for x
    x = 93,865,002,766.53/353,528.40
  6. Step 6: Final answer
    x = 265,509.09

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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.