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Finding the Fourth Proportional to 12,935.92, 19,407.12 and 3,701.92

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Solution

The fourth proportional to 12,935.92, 19,407.12 and 3,701.92 is: 5,553.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,935.92 : 19,407.12 = 3,701.92 : x
  2. Step 2: Convert to fraction form
    12,935.92/19,407.12 = 3,701.92/x
  3. Step 3: Cross multiply
    12,935.92x = 19,407.12 × 3,701.92
  4. Step 4: Simplify right side
    12,935.92x = 71,843,605.67
  5. Step 5: Solve for x
    x = 71,843,605.67/12,935.92
  6. Step 6: Final answer
    x = 5,553.81

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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.