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Finding the Fourth Proportional to 307,975.50, 425,006.19 and 166,663.50

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Solution

The fourth proportional to 307,975.50, 425,006.19 and 166,663.50 is: 229,995.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,975.50 : 425,006.19 = 166,663.50 : x
  2. Step 2: Convert to fraction form
    307,975.50/425,006.19 = 166,663.50/x
  3. Step 3: Cross multiply
    307,975.50x = 425,006.19 × 166,663.50
  4. Step 4: Simplify right side
    307,975.50x = 70,833,019,147.07
  5. Step 5: Solve for x
    x = 70,833,019,147.07/307,975.50
  6. Step 6: Final answer
    x = 229,995.63

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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.