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Finding the Fourth Proportional to 12,231, 18,346.50 and 4,023

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Solution

The fourth proportional to 12,231, 18,346.50 and 4,023 is: 6,034.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231 : 18,346.50 = 4,023 : x
  2. Step 2: Convert to fraction form
    12,231/18,346.50 = 4,023/x
  3. Step 3: Cross multiply
    12,231x = 18,346.50 × 4,023
  4. Step 4: Simplify right side
    12,231x = 73,807,969.50
  5. Step 5: Solve for x
    x = 73,807,969.50/12,231
  6. Step 6: Final answer
    x = 6,034.50

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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.