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Finding the Fourth Proportional to 78,933, 118,412.88 and 34,558.68

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Solution

The fourth proportional to 78,933, 118,412.88 and 34,558.68 is: 51,843.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,933 : 118,412.88 = 34,558.68 : x
  2. Step 2: Convert to fraction form
    78,933/118,412.88 = 34,558.68/x
  3. Step 3: Cross multiply
    78,933x = 118,412.88 × 34,558.68
  4. Step 4: Simplify right side
    78,933x = 4,092,192,827.80
  5. Step 5: Solve for x
    x = 4,092,192,827.80/78,933
  6. Step 6: Final answer
    x = 51,843.88

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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.