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Finding the Fourth Proportional to 70,187.78, 96,857.60 and 39,560.66

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Solution

The fourth proportional to 70,187.78, 96,857.60 and 39,560.66 is: 54,592.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,187.78 : 96,857.60 = 39,560.66 : x
  2. Step 2: Convert to fraction form
    70,187.78/96,857.60 = 39,560.66/x
  3. Step 3: Cross multiply
    70,187.78x = 96,857.60 × 39,560.66
  4. Step 4: Simplify right side
    70,187.78x = 3,831,749,899.92
  5. Step 5: Solve for x
    x = 3,831,749,899.92/70,187.78
  6. Step 6: Final answer
    x = 54,592.84

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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.