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Finding the Fourth Proportional to 70,998.44, 97,977.30 and 39,168.68

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Solution

The fourth proportional to 70,998.44, 97,977.30 and 39,168.68 is: 54,052.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,998.44 : 97,977.30 = 39,168.68 : x
  2. Step 2: Convert to fraction form
    70,998.44/97,977.30 = 39,168.68/x
  3. Step 3: Cross multiply
    70,998.44x = 97,977.30 × 39,168.68
  4. Step 4: Simplify right side
    70,998.44x = 3,837,641,510.96
  5. Step 5: Solve for x
    x = 3,837,641,510.96/70,998.44
  6. Step 6: Final answer
    x = 54,052.48

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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.