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Finding the Fourth Proportional to 67,051.87, 92,531.78 and 40,195.51

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Solution

The fourth proportional to 67,051.87, 92,531.78 and 40,195.51 is: 55,469.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,051.87 : 92,531.78 = 40,195.51 : x
  2. Step 2: Convert to fraction form
    67,051.87/92,531.78 = 40,195.51/x
  3. Step 3: Cross multiply
    67,051.87x = 92,531.78 × 40,195.51
  4. Step 4: Simplify right side
    67,051.87x = 3,719,362,088.31
  5. Step 5: Solve for x
    x = 3,719,362,088.31/67,051.87
  6. Step 6: Final answer
    x = 55,469.92

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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.