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Finding the Fourth Proportional to 342,586.28, 472,754.17 and 189,615.35

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Solution

The fourth proportional to 342,586.28, 472,754.17 and 189,615.35 is: 261,660.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,586.28 : 472,754.17 = 189,615.35 : x
  2. Step 2: Convert to fraction form
    342,586.28/472,754.17 = 189,615.35/x
  3. Step 3: Cross multiply
    342,586.28x = 472,754.17 × 189,615.35
  4. Step 4: Simplify right side
    342,586.28x = 89,641,448,827.41
  5. Step 5: Solve for x
    x = 89,641,448,827.41/342,586.28
  6. Step 6: Final answer
    x = 261,660.94

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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.