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Finding the Fourth Proportional to 70,786.92, 97,689.97 and 40,577.25

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Solution

The fourth proportional to 70,786.92, 97,689.97 and 40,577.25 is: 55,998.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,786.92 : 97,689.97 = 40,577.25 : x
  2. Step 2: Convert to fraction form
    70,786.92/97,689.97 = 40,577.25/x
  3. Step 3: Cross multiply
    70,786.92x = 97,689.97 × 40,577.25
  4. Step 4: Simplify right side
    70,786.92x = 3,963,990,335.18
  5. Step 5: Solve for x
    x = 3,963,990,335.18/70,786.92
  6. Step 6: Final answer
    x = 55,998.91

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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.