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Finding the Fourth Proportional to 18,235.84, 27,349.20 and 5,087.68

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Solution

The fourth proportional to 18,235.84, 27,349.20 and 5,087.68 is: 7,630.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,235.84 : 27,349.20 = 5,087.68 : x
  2. Step 2: Convert to fraction form
    18,235.84/27,349.20 = 5,087.68/x
  3. Step 3: Cross multiply
    18,235.84x = 27,349.20 × 5,087.68
  4. Step 4: Simplify right side
    18,235.84x = 139,143,977.86
  5. Step 5: Solve for x
    x = 139,143,977.86/18,235.84
  6. Step 6: Final answer
    x = 7,630.25

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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.