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Finding the Fourth Proportional to 70,951.96, 97,913.44 and 39,122.61

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Solution

The fourth proportional to 70,951.96, 97,913.44 and 39,122.61 is: 53,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,951.96 : 97,913.44 = 39,122.61 : x
  2. Step 2: Convert to fraction form
    70,951.96/97,913.44 = 39,122.61/x
  3. Step 3: Cross multiply
    70,951.96x = 97,913.44 × 39,122.61
  4. Step 4: Simplify right side
    70,951.96x = 3,830,629,326.88
  5. Step 5: Solve for x
    x = 3,830,629,326.88/70,951.96
  6. Step 6: Final answer
    x = 53,989.06

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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.