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Finding the Fourth Proportional to 18,404.61, 27,622.67 and 7,319.10

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Solution

The fourth proportional to 18,404.61, 27,622.67 and 7,319.10 is: 10,984.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.61 : 27,622.67 = 7,319.10 : x
  2. Step 2: Convert to fraction form
    18,404.61/27,622.67 = 7,319.10/x
  3. Step 3: Cross multiply
    18,404.61x = 27,622.67 × 7,319.10
  4. Step 4: Simplify right side
    18,404.61x = 202,173,047.40
  5. Step 5: Solve for x
    x = 202,173,047.40/18,404.61
  6. Step 6: Final answer
    x = 10,984.91

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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.