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Finding the Fourth Proportional to 70,856.66, 97,781.93 and 39,025.48

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Solution

The fourth proportional to 70,856.66, 97,781.93 and 39,025.48 is: 53,855.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,856.66 : 97,781.93 = 39,025.48 : x
  2. Step 2: Convert to fraction form
    70,856.66/97,781.93 = 39,025.48/x
  3. Step 3: Cross multiply
    70,856.66x = 97,781.93 × 39,025.48
  4. Step 4: Simplify right side
    70,856.66x = 3,815,986,753.58
  5. Step 5: Solve for x
    x = 3,815,986,753.58/70,856.66
  6. Step 6: Final answer
    x = 53,855.02

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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.