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Finding the Fourth Proportional to 1,944.81, 2,915.48 and 848.58

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Solution

The fourth proportional to 1,944.81, 2,915.48 and 848.58 is: 1,272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.81 : 2,915.48 = 848.58 : x
  2. Step 2: Convert to fraction form
    1,944.81/2,915.48 = 848.58/x
  3. Step 3: Cross multiply
    1,944.81x = 2,915.48 × 848.58
  4. Step 4: Simplify right side
    1,944.81x = 2,474,013.78
  5. Step 5: Solve for x
    x = 2,474,013.78/1,944.81
  6. Step 6: Final answer
    x = 1,272.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.