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Finding the Fourth Proportional to 22,899.80, 34,358.22 and 7,318.64

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Solution

The fourth proportional to 22,899.80, 34,358.22 and 7,318.64 is: 10,980.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,899.80 : 34,358.22 = 7,318.64 : x
  2. Step 2: Convert to fraction form
    22,899.80/34,358.22 = 7,318.64/x
  3. Step 3: Cross multiply
    22,899.80x = 34,358.22 × 7,318.64
  4. Step 4: Simplify right side
    22,899.80x = 251,455,271.43
  5. Step 5: Solve for x
    x = 251,455,271.43/22,899.80
  6. Step 6: Final answer
    x = 10,980.68

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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.