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Finding the Fourth Proportional to 48,907.80, 73,361.70 and 43,270.20

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Solution

The fourth proportional to 48,907.80, 73,361.70 and 43,270.20 is: 64,905.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,907.80 : 73,361.70 = 43,270.20 : x
  2. Step 2: Convert to fraction form
    48,907.80/73,361.70 = 43,270.20/x
  3. Step 3: Cross multiply
    48,907.80x = 73,361.70 × 43,270.20
  4. Step 4: Simplify right side
    48,907.80x = 3,174,375,431.34
  5. Step 5: Solve for x
    x = 3,174,375,431.34/48,907.80
  6. Step 6: Final answer
    x = 64,905.30

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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.