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Finding the Fourth Proportional to 99,622.44, 149,361.84 and 46,980

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Solution

The fourth proportional to 99,622.44, 149,361.84 and 46,980 is: 70,436.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,622.44 : 149,361.84 = 46,980 : x
  2. Step 2: Convert to fraction form
    99,622.44/149,361.84 = 46,980/x
  3. Step 3: Cross multiply
    99,622.44x = 149,361.84 × 46,980
  4. Step 4: Simplify right side
    99,622.44x = 7,017,019,243.20
  5. Step 5: Solve for x
    x = 7,017,019,243.20/99,622.44
  6. Step 6: Final answer
    x = 70,436.13

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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.