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Finding the Fourth Proportional to 7,136.70, 10,717.20 and 4,682.40

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Solution

The fourth proportional to 7,136.70, 10,717.20 and 4,682.40 is: 7,031.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.70 : 10,717.20 = 4,682.40 : x
  2. Step 2: Convert to fraction form
    7,136.70/10,717.20 = 4,682.40/x
  3. Step 3: Cross multiply
    7,136.70x = 10,717.20 × 4,682.40
  4. Step 4: Simplify right side
    7,136.70x = 50,182,217.28
  5. Step 5: Solve for x
    x = 50,182,217.28/7,136.70
  6. Step 6: Final answer
    x = 7,031.57

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1.5x scale

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.