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Finding the Fourth Proportional to 338,901.45, 508,347.31 and 82,737.33

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Solution

The fourth proportional to 338,901.45, 508,347.31 and 82,737.33 is: 124,104.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,901.45 : 508,347.31 = 82,737.33 : x
  2. Step 2: Convert to fraction form
    338,901.45/508,347.31 = 82,737.33/x
  3. Step 3: Cross multiply
    338,901.45x = 508,347.31 × 82,737.33
  4. Step 4: Simplify right side
    338,901.45x = 42,059,299,142.08
  5. Step 5: Solve for x
    x = 42,059,299,142.08/338,901.45
  6. Step 6: Final answer
    x = 124,104.81

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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.