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Finding the Fourth Proportional to 330,496.72, 495,777.30 and 105,800.56

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Solution

The fourth proportional to 330,496.72, 495,777.30 and 105,800.56 is: 158,711.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,496.72 : 495,777.30 = 105,800.56 : x
  2. Step 2: Convert to fraction form
    330,496.72/495,777.30 = 105,800.56/x
  3. Step 3: Cross multiply
    330,496.72x = 495,777.30 × 105,800.56
  4. Step 4: Simplify right side
    330,496.72x = 52,453,515,975.29
  5. Step 5: Solve for x
    x = 52,453,515,975.29/330,496.72
  6. Step 6: Final answer
    x = 158,711.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.