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Finding the Fourth Proportional to 29,009.36, 43,509.12 and 8,228

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Solution

The fourth proportional to 29,009.36, 43,509.12 and 8,228 is: 12,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,009.36 : 43,509.12 = 8,228 : x
  2. Step 2: Convert to fraction form
    29,009.36/43,509.12 = 8,228/x
  3. Step 3: Cross multiply
    29,009.36x = 43,509.12 × 8,228
  4. Step 4: Simplify right side
    29,009.36x = 357,993,039.36
  5. Step 5: Solve for x
    x = 357,993,039.36/29,009.36
  6. Step 6: Final answer
    x = 12,340.60

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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.