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Finding the Fourth Proportional to 13,907.37, 20,737.00 and 12,361.89

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Solution

The fourth proportional to 13,907.37, 20,737.00 and 12,361.89 is: 18,432.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.37 : 20,737.00 = 12,361.89 : x
  2. Step 2: Convert to fraction form
    13,907.37/20,737.00 = 12,361.89/x
  3. Step 3: Cross multiply
    13,907.37x = 20,737.00 × 12,361.89
  4. Step 4: Simplify right side
    13,907.37x = 256,348,451.12
  5. Step 5: Solve for x
    x = 256,348,451.12/13,907.37
  6. Step 6: Final answer
    x = 18,432.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.