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Finding the Fourth Proportional to 398,771.66, 598,246.40 and 114,440.05

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Solution

The fourth proportional to 398,771.66, 598,246.40 and 114,440.05 is: 171,685.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,771.66 : 598,246.40 = 114,440.05 : x
  2. Step 2: Convert to fraction form
    398,771.66/598,246.40 = 114,440.05/x
  3. Step 3: Cross multiply
    398,771.66x = 598,246.40 × 114,440.05
  4. Step 4: Simplify right side
    398,771.66x = 68,463,346,718.80
  5. Step 5: Solve for x
    x = 68,463,346,718.80/398,771.66
  6. Step 6: Final answer
    x = 171,685.59

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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.