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Finding the Fourth Proportional to 70,651.85, 97,498.62 and 40,436.55

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Solution

The fourth proportional to 70,651.85, 97,498.62 and 40,436.55 is: 55,801.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,651.85 : 97,498.62 = 40,436.55 : x
  2. Step 2: Convert to fraction form
    70,651.85/97,498.62 = 40,436.55/x
  3. Step 3: Cross multiply
    70,651.85x = 97,498.62 × 40,436.55
  4. Step 4: Simplify right side
    70,651.85x = 3,942,507,822.56
  5. Step 5: Solve for x
    x = 3,942,507,822.56/70,651.85
  6. Step 6: Final answer
    x = 55,801.91

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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.