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Finding the Fourth Proportional to 219,842.91, 303,390.09 and 124,347.69

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Solution

The fourth proportional to 219,842.91, 303,390.09 and 124,347.69 is: 171,603.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,842.91 : 303,390.09 = 124,347.69 : x
  2. Step 2: Convert to fraction form
    219,842.91/303,390.09 = 124,347.69/x
  3. Step 3: Cross multiply
    219,842.91x = 303,390.09 × 124,347.69
  4. Step 4: Simplify right side
    219,842.91x = 37,725,856,860.39
  5. Step 5: Solve for x
    x = 37,725,856,860.39/219,842.91
  6. Step 6: Final answer
    x = 171,603.70

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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.