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Finding the Fourth Proportional to 219,835.80, 303,374.70 and 124,336.80

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Solution

The fourth proportional to 219,835.80, 303,374.70 and 124,336.80 is: 171,585.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,835.80 : 303,374.70 = 124,336.80 : x
  2. Step 2: Convert to fraction form
    219,835.80/303,374.70 = 124,336.80/x
  3. Step 3: Cross multiply
    219,835.80x = 303,374.70 × 124,336.80
  4. Step 4: Simplify right side
    219,835.80x = 37,720,639,398.96
  5. Step 5: Solve for x
    x = 37,720,639,398.96/219,835.80
  6. Step 6: Final answer
    x = 171,585.52

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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.