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Finding the Fourth Proportional to 265,353.43, 398,185.67 and 190,392.79

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Solution

The fourth proportional to 265,353.43, 398,185.67 and 190,392.79 is: 285,700.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,353.43 : 398,185.67 = 190,392.79 : x
  2. Step 2: Convert to fraction form
    265,353.43/398,185.67 = 190,392.79/x
  3. Step 3: Cross multiply
    265,353.43x = 398,185.67 × 190,392.79
  4. Step 4: Simplify right side
    265,353.43x = 75,811,679,697.36
  5. Step 5: Solve for x
    x = 75,811,679,697.36/265,353.43
  6. Step 6: Final answer
    x = 285,700.77

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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.