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Finding the Fourth Proportional to 5,429, 7,492.02 and 3,071.10

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Solution

The fourth proportional to 5,429, 7,492.02 and 3,071.10 is: 4,238.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429 : 7,492.02 = 3,071.10 : x
  2. Step 2: Convert to fraction form
    5,429/7,492.02 = 3,071.10/x
  3. Step 3: Cross multiply
    5,429x = 7,492.02 × 3,071.10
  4. Step 4: Simplify right side
    5,429x = 23,008,742.62
  5. Step 5: Solve for x
    x = 23,008,742.62/5,429
  6. Step 6: Final answer
    x = 4,238.12

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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.