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Finding the Fourth Proportional to 3,492.62, 5,238.84 and 1,412.57

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Solution

The fourth proportional to 3,492.62, 5,238.84 and 1,412.57 is: 2,118.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,492.62 : 5,238.84 = 1,412.57 : x
  2. Step 2: Convert to fraction form
    3,492.62/5,238.84 = 1,412.57/x
  3. Step 3: Cross multiply
    3,492.62x = 5,238.84 × 1,412.57
  4. Step 4: Simplify right side
    3,492.62x = 7,400,228.22
  5. Step 5: Solve for x
    x = 7,400,228.22/3,492.62
  6. Step 6: Final answer
    x = 2,118.82

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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.