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Finding the Fourth Proportional to 18,065.25, 27,095.13 and 4,918.64

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Solution

The fourth proportional to 18,065.25, 27,095.13 and 4,918.64 is: 7,377.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,065.25 : 27,095.13 = 4,918.64 : x
  2. Step 2: Convert to fraction form
    18,065.25/27,095.13 = 4,918.64/x
  3. Step 3: Cross multiply
    18,065.25x = 27,095.13 × 4,918.64
  4. Step 4: Simplify right side
    18,065.25x = 133,271,054.75
  5. Step 5: Solve for x
    x = 133,271,054.75/18,065.25
  6. Step 6: Final answer
    x = 7,377.21

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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.