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Finding the Fourth Proportional to 70,018.70, 96,634.10 and 39,808.58

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Solution

The fourth proportional to 70,018.70, 96,634.10 and 39,808.58 is: 54,940.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,018.70 : 96,634.10 = 39,808.58 : x
  2. Step 2: Convert to fraction form
    70,018.70/96,634.10 = 39,808.58/x
  3. Step 3: Cross multiply
    70,018.70x = 96,634.10 × 39,808.58
  4. Step 4: Simplify right side
    70,018.70x = 3,846,865,916.93
  5. Step 5: Solve for x
    x = 3,846,865,916.93/70,018.70
  6. Step 6: Final answer
    x = 54,940.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.