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Finding the Fourth Proportional to 164,470.80, 246,451.92 and 128,361.64

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Solution

The fourth proportional to 164,470.80, 246,451.92 and 128,361.64 is: 192,344.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,470.80 : 246,451.92 = 128,361.64 : x
  2. Step 2: Convert to fraction form
    164,470.80/246,451.92 = 128,361.64/x
  3. Step 3: Cross multiply
    164,470.80x = 246,451.92 × 128,361.64
  4. Step 4: Simplify right side
    164,470.80x = 31,634,972,632.35
  5. Step 5: Solve for x
    x = 31,634,972,632.35/164,470.80
  6. Step 6: Final answer
    x = 192,344.01

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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.