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Finding the Fourth Proportional to 608,769.50, 913,128.05 and 159,480.42

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Solution

The fourth proportional to 608,769.50, 913,128.05 and 159,480.42 is: 239,213.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,769.50 : 913,128.05 = 159,480.42 : x
  2. Step 2: Convert to fraction form
    608,769.50/913,128.05 = 159,480.42/x
  3. Step 3: Cross multiply
    608,769.50x = 913,128.05 × 159,480.42
  4. Step 4: Simplify right side
    608,769.50x = 145,626,041,005.18
  5. Step 5: Solve for x
    x = 145,626,041,005.18/608,769.50
  6. Step 6: Final answer
    x = 239,213.76

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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.