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Finding the Fourth Proportional to 18,743.52, 28,119.52 and 5,595.40

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Solution

The fourth proportional to 18,743.52, 28,119.52 and 5,595.40 is: 8,394.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.52 : 28,119.52 = 5,595.40 : x
  2. Step 2: Convert to fraction form
    18,743.52/28,119.52 = 5,595.40/x
  3. Step 3: Cross multiply
    18,743.52x = 28,119.52 × 5,595.40
  4. Step 4: Simplify right side
    18,743.52x = 157,339,962.21
  5. Step 5: Solve for x
    x = 157,339,962.21/18,743.52
  6. Step 6: Final answer
    x = 8,394.37

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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.