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Finding the Fourth Proportional to 1,191.84, 1,644 and 1,044.48

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Solution

The fourth proportional to 1,191.84, 1,644 and 1,044.48 is: 1,440.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.84 : 1,644 = 1,044.48 : x
  2. Step 2: Convert to fraction form
    1,191.84/1,644 = 1,044.48/x
  3. Step 3: Cross multiply
    1,191.84x = 1,644 × 1,044.48
  4. Step 4: Simplify right side
    1,191.84x = 1,717,125.12
  5. Step 5: Solve for x
    x = 1,717,125.12/1,191.84
  6. Step 6: Final answer
    x = 1,440.73

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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.