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Finding the Fourth Proportional to 398,822.63, 598,104.54 and 132,511.64

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Solution

The fourth proportional to 398,822.63, 598,104.54 and 132,511.64 is: 198,724.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,822.63 : 598,104.54 = 132,511.64 : x
  2. Step 2: Convert to fraction form
    398,822.63/598,104.54 = 132,511.64/x
  3. Step 3: Cross multiply
    398,822.63x = 598,104.54 × 132,511.64
  4. Step 4: Simplify right side
    398,822.63x = 79,255,810,496.32
  5. Step 5: Solve for x
    x = 79,255,810,496.32/398,822.63
  6. Step 6: Final answer
    x = 198,724.46

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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.