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Finding the Fourth Proportional to 12,317, 18,475.50 and 3,083

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Solution

The fourth proportional to 12,317, 18,475.50 and 3,083 is: 4,624.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,317 : 18,475.50 = 3,083 : x
  2. Step 2: Convert to fraction form
    12,317/18,475.50 = 3,083/x
  3. Step 3: Cross multiply
    12,317x = 18,475.50 × 3,083
  4. Step 4: Simplify right side
    12,317x = 56,959,966.50
  5. Step 5: Solve for x
    x = 56,959,966.50/12,317
  6. Step 6: Final answer
    x = 4,624.50

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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.