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Finding the Fourth Proportional to 854.94, 1,181.16 and 848.46

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Solution

The fourth proportional to 854.94, 1,181.16 and 848.46 is: 1,172.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.94 : 1,181.16 = 848.46 : x
  2. Step 2: Convert to fraction form
    854.94/1,181.16 = 848.46/x
  3. Step 3: Cross multiply
    854.94x = 1,181.16 × 848.46
  4. Step 4: Simplify right side
    854.94x = 1,002,167.01
  5. Step 5: Solve for x
    x = 1,002,167.01/854.94
  6. Step 6: Final answer
    x = 1,172.21

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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.