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Finding the Fourth Proportional to 78,383, 108,185.56 and 48,194.16

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Solution

The fourth proportional to 78,383, 108,185.56 and 48,194.16 is: 66,518.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,383 : 108,185.56 = 48,194.16 : x
  2. Step 2: Convert to fraction form
    78,383/108,185.56 = 48,194.16/x
  3. Step 3: Cross multiply
    78,383x = 108,185.56 × 48,194.16
  4. Step 4: Simplify right side
    78,383x = 5,213,912,188.33
  5. Step 5: Solve for x
    x = 5,213,912,188.33/78,383
  6. Step 6: Final answer
    x = 66,518.41

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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.