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Finding the Fourth Proportional to 613,290.12, 919,870.43 and 164,056.32

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Solution

The fourth proportional to 613,290.12, 919,870.43 and 164,056.32 is: 246,067.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,290.12 : 919,870.43 = 164,056.32 : x
  2. Step 2: Convert to fraction form
    613,290.12/919,870.43 = 164,056.32/x
  3. Step 3: Cross multiply
    613,290.12x = 919,870.43 × 164,056.32
  4. Step 4: Simplify right side
    613,290.12x = 150,910,557,622.62
  5. Step 5: Solve for x
    x = 150,910,557,622.62/613,290.12
  6. Step 6: Final answer
    x = 246,067.16

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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.