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Finding the Fourth Proportional to 18,892.17, 28,339.26 and 5,743.53

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Solution

The fourth proportional to 18,892.17, 28,339.26 and 5,743.53 is: 8,615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.17 : 28,339.26 = 5,743.53 : x
  2. Step 2: Convert to fraction form
    18,892.17/28,339.26 = 5,743.53/x
  3. Step 3: Cross multiply
    18,892.17x = 28,339.26 × 5,743.53
  4. Step 4: Simplify right side
    18,892.17x = 162,767,389.99
  5. Step 5: Solve for x
    x = 162,767,389.99/18,892.17
  6. Step 6: Final answer
    x = 8,615.60

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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.