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Finding the Fourth Proportional to 18,848.25, 28,274.31 and 4,997.25

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Solution

The fourth proportional to 18,848.25, 28,274.31 and 4,997.25 is: 7,496.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,848.25 : 28,274.31 = 4,997.25 : x
  2. Step 2: Convert to fraction form
    18,848.25/28,274.31 = 4,997.25/x
  3. Step 3: Cross multiply
    18,848.25x = 28,274.31 × 4,997.25
  4. Step 4: Simplify right side
    18,848.25x = 141,293,795.65
  5. Step 5: Solve for x
    x = 141,293,795.65/18,848.25
  6. Step 6: Final answer
    x = 7,496.39

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1.5x scale

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.