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Finding the Fourth Proportional to 70,845.76, 97,763.25 and 39,008.44

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Solution

The fourth proportional to 70,845.76, 97,763.25 and 39,008.44 is: 53,829.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,845.76 : 97,763.25 = 39,008.44 : x
  2. Step 2: Convert to fraction form
    70,845.76/97,763.25 = 39,008.44/x
  3. Step 3: Cross multiply
    70,845.76x = 97,763.25 × 39,008.44
  4. Step 4: Simplify right side
    70,845.76x = 3,813,591,871.83
  5. Step 5: Solve for x
    x = 3,813,591,871.83/70,845.76
  6. Step 6: Final answer
    x = 53,829.50

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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.