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Finding the Fourth Proportional to 16,907.44, 25,361.16 and 5,220.40

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Solution

The fourth proportional to 16,907.44, 25,361.16 and 5,220.40 is: 7,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,907.44 : 25,361.16 = 5,220.40 : x
  2. Step 2: Convert to fraction form
    16,907.44/25,361.16 = 5,220.40/x
  3. Step 3: Cross multiply
    16,907.44x = 25,361.16 × 5,220.40
  4. Step 4: Simplify right side
    16,907.44x = 132,395,399.66
  5. Step 5: Solve for x
    x = 132,395,399.66/16,907.44
  6. Step 6: Final answer
    x = 7,830.60

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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.