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Finding the Fourth Proportional to 3,492.98, 5,239.80 and 1,153

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Solution

The fourth proportional to 3,492.98, 5,239.80 and 1,153 is: 1,729.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,492.98 : 5,239.80 = 1,153 : x
  2. Step 2: Convert to fraction form
    3,492.98/5,239.80 = 1,153/x
  3. Step 3: Cross multiply
    3,492.98x = 5,239.80 × 1,153
  4. Step 4: Simplify right side
    3,492.98x = 6,041,489.40
  5. Step 5: Solve for x
    x = 6,041,489.40/3,492.98
  6. Step 6: Final answer
    x = 1,729.61

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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.