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Finding the Fourth Proportional to 408,853.60, 613,061.70 and 171,928.60

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Solution

The fourth proportional to 408,853.60, 613,061.70 and 171,928.60 is: 257,800.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,853.60 : 613,061.70 = 171,928.60 : x
  2. Step 2: Convert to fraction form
    408,853.60/613,061.70 = 171,928.60/x
  3. Step 3: Cross multiply
    408,853.60x = 613,061.70 × 171,928.60
  4. Step 4: Simplify right side
    408,853.60x = 105,402,839,794.62
  5. Step 5: Solve for x
    x = 105,402,839,794.62/408,853.60
  6. Step 6: Final answer
    x = 257,800.93

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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.