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Finding the Fourth Proportional to 13,813.73, 20,708.88 and 4,926.39

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Solution

The fourth proportional to 13,813.73, 20,708.88 and 4,926.39 is: 7,385.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.73 : 20,708.88 = 4,926.39 : x
  2. Step 2: Convert to fraction form
    13,813.73/20,708.88 = 4,926.39/x
  3. Step 3: Cross multiply
    13,813.73x = 20,708.88 × 4,926.39
  4. Step 4: Simplify right side
    13,813.73x = 102,019,960.16
  5. Step 5: Solve for x
    x = 102,019,960.16/13,813.73
  6. Step 6: Final answer
    x = 7,385.40

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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.