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Finding the Fourth Proportional to 198,308.84, 273,541.56 and 117,679.28

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Solution

The fourth proportional to 198,308.84, 273,541.56 and 117,679.28 is: 162,323.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,308.84 : 273,541.56 = 117,679.28 : x
  2. Step 2: Convert to fraction form
    198,308.84/273,541.56 = 117,679.28/x
  3. Step 3: Cross multiply
    198,308.84x = 273,541.56 × 117,679.28
  4. Step 4: Simplify right side
    198,308.84x = 32,190,173,830.88
  5. Step 5: Solve for x
    x = 32,190,173,830.88/198,308.84
  6. Step 6: Final answer
    x = 162,323.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.