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Finding the Fourth Proportional to 70,672.25, 97,521.99 and 40,450.70

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Solution

The fourth proportional to 70,672.25, 97,521.99 and 40,450.70 is: 55,818.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,672.25 : 97,521.99 = 40,450.70 : x
  2. Step 2: Convert to fraction form
    70,672.25/97,521.99 = 40,450.70/x
  3. Step 3: Cross multiply
    70,672.25x = 97,521.99 × 40,450.70
  4. Step 4: Simplify right side
    70,672.25x = 3,944,832,760.89
  5. Step 5: Solve for x
    x = 3,944,832,760.89/70,672.25
  6. Step 6: Final answer
    x = 55,818.69

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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.