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Finding the Fourth Proportional to 12,409.49, 18,603.24 and 4,612.85

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Solution

The fourth proportional to 12,409.49, 18,603.24 and 4,612.85 is: 6,915.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409.49 : 18,603.24 = 4,612.85 : x
  2. Step 2: Convert to fraction form
    12,409.49/18,603.24 = 4,612.85/x
  3. Step 3: Cross multiply
    12,409.49x = 18,603.24 × 4,612.85
  4. Step 4: Simplify right side
    12,409.49x = 85,813,955.63
  5. Step 5: Solve for x
    x = 85,813,955.63/12,409.49
  6. Step 6: Final answer
    x = 6,915.19

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.