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Finding the Fourth Proportional to 12,809.15, 19,084.93 and 12,092.95

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Solution

The fourth proportional to 12,809.15, 19,084.93 and 12,092.95 is: 18,017.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.15 : 19,084.93 = 12,092.95 : x
  2. Step 2: Convert to fraction form
    12,809.15/19,084.93 = 12,092.95/x
  3. Step 3: Cross multiply
    12,809.15x = 19,084.93 × 12,092.95
  4. Step 4: Simplify right side
    12,809.15x = 230,793,071.65
  5. Step 5: Solve for x
    x = 230,793,071.65/12,809.15
  6. Step 6: Final answer
    x = 18,017.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.