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Finding the Fourth Proportional to 1,511.66, 2,086.12 and 848.56

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Solution

The fourth proportional to 1,511.66, 2,086.12 and 848.56 is: 1,171.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.66 : 2,086.12 = 848.56 : x
  2. Step 2: Convert to fraction form
    1,511.66/2,086.12 = 848.56/x
  3. Step 3: Cross multiply
    1,511.66x = 2,086.12 × 848.56
  4. Step 4: Simplify right side
    1,511.66x = 1,770,193.83
  5. Step 5: Solve for x
    x = 1,770,193.83/1,511.66
  6. Step 6: Final answer
    x = 1,171.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.