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Finding the Fourth Proportional to 1,943.29, 2,915.34 and 848.44

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Solution

The fourth proportional to 1,943.29, 2,915.34 and 848.44 is: 1,272.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.29 : 2,915.34 = 848.44 : x
  2. Step 2: Convert to fraction form
    1,943.29/2,915.34 = 848.44/x
  3. Step 3: Cross multiply
    1,943.29x = 2,915.34 × 848.44
  4. Step 4: Simplify right side
    1,943.29x = 2,473,491.07
  5. Step 5: Solve for x
    x = 2,473,491.07/1,943.29
  6. Step 6: Final answer
    x = 1,272.84

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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.