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Finding the Fourth Proportional to 18,064.64, 27,097.44 and 4,917.28

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Solution

The fourth proportional to 18,064.64, 27,097.44 and 4,917.28 is: 7,376.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,064.64 : 27,097.44 = 4,917.28 : x
  2. Step 2: Convert to fraction form
    18,064.64/27,097.44 = 4,917.28/x
  3. Step 3: Cross multiply
    18,064.64x = 27,097.44 × 4,917.28
  4. Step 4: Simplify right side
    18,064.64x = 133,245,699.76
  5. Step 5: Solve for x
    x = 133,245,699.76/18,064.64
  6. Step 6: Final answer
    x = 7,376.05

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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.