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Finding the Fourth Proportional to 40,993.97, 61,493.14 and 12,916.19

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Solution

The fourth proportional to 40,993.97, 61,493.14 and 12,916.19 is: 19,374.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,993.97 : 61,493.14 = 12,916.19 : x
  2. Step 2: Convert to fraction form
    40,993.97/61,493.14 = 12,916.19/x
  3. Step 3: Cross multiply
    40,993.97x = 61,493.14 × 12,916.19
  4. Step 4: Simplify right side
    40,993.97x = 794,257,249.81
  5. Step 5: Solve for x
    x = 794,257,249.81/40,993.97
  6. Step 6: Final answer
    x = 19,374.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.