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Finding the Fourth Proportional to 210,481.56, 315,217.98 and 153,402.48

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Solution

The fourth proportional to 210,481.56, 315,217.98 and 153,402.48 is: 229,736.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,481.56 : 315,217.98 = 153,402.48 : x
  2. Step 2: Convert to fraction form
    210,481.56/315,217.98 = 153,402.48/x
  3. Step 3: Cross multiply
    210,481.56x = 315,217.98 × 153,402.48
  4. Step 4: Simplify right side
    210,481.56x = 48,355,219,872.59
  5. Step 5: Solve for x
    x = 48,355,219,872.59/210,481.56
  6. Step 6: Final answer
    x = 229,736.13

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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.