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Finding the Fourth Proportional to 1,999.39, 3,014.05 and 1,865.59

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Solution

The fourth proportional to 1,999.39, 3,014.05 and 1,865.59 is: 2,812.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.39 : 3,014.05 = 1,865.59 : x
  2. Step 2: Convert to fraction form
    1,999.39/3,014.05 = 1,865.59/x
  3. Step 3: Cross multiply
    1,999.39x = 3,014.05 × 1,865.59
  4. Step 4: Simplify right side
    1,999.39x = 5,622,981.54
  5. Step 5: Solve for x
    x = 5,622,981.54/1,999.39
  6. Step 6: Final answer
    x = 2,812.35

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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.