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Finding the Fourth Proportional to 1,492.26, 2,237 and 711.88

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Solution

The fourth proportional to 1,492.26, 2,237 and 711.88 is: 1,067.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.26 : 2,237 = 711.88 : x
  2. Step 2: Convert to fraction form
    1,492.26/2,237 = 711.88/x
  3. Step 3: Cross multiply
    1,492.26x = 2,237 × 711.88
  4. Step 4: Simplify right side
    1,492.26x = 1,592,475.56
  5. Step 5: Solve for x
    x = 1,592,475.56/1,492.26
  6. Step 6: Final answer
    x = 1,067.16

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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.