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Finding the Fourth Proportional to 67,372.87, 92,978.81 and 38,701.51

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Solution

The fourth proportional to 67,372.87, 92,978.81 and 38,701.51 is: 53,410.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,372.87 : 92,978.81 = 38,701.51 : x
  2. Step 2: Convert to fraction form
    67,372.87/92,978.81 = 38,701.51/x
  3. Step 3: Cross multiply
    67,372.87x = 92,978.81 × 38,701.51
  4. Step 4: Simplify right side
    67,372.87x = 3,598,420,345.00
  5. Step 5: Solve for x
    x = 3,598,420,345.00/67,372.87
  6. Step 6: Final answer
    x = 53,410.52

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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.