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Finding the Fourth Proportional to 18,683.10, 28,036.26 and 7,004.52

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Solution

The fourth proportional to 18,683.10, 28,036.26 and 7,004.52 is: 10,511.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.10 : 28,036.26 = 7,004.52 : x
  2. Step 2: Convert to fraction form
    18,683.10/28,036.26 = 7,004.52/x
  3. Step 3: Cross multiply
    18,683.10x = 28,036.26 × 7,004.52
  4. Step 4: Simplify right side
    18,683.10x = 196,380,543.90
  5. Step 5: Solve for x
    x = 196,380,543.90/18,683.10
  6. Step 6: Final answer
    x = 10,511.13

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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.