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Finding the Fourth Proportional to 1,999.39, 3,014.08 and 1,865.61

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Solution

The fourth proportional to 1,999.39, 3,014.08 and 1,865.61 is: 2,812.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.39 : 3,014.08 = 1,865.61 : x
  2. Step 2: Convert to fraction form
    1,999.39/3,014.08 = 1,865.61/x
  3. Step 3: Cross multiply
    1,999.39x = 3,014.08 × 1,865.61
  4. Step 4: Simplify right side
    1,999.39x = 5,623,097.79
  5. Step 5: Solve for x
    x = 5,623,097.79/1,999.39
  6. Step 6: Final answer
    x = 2,812.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.