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Finding the Fourth Proportional to 198,531.03, 273,978.95 and 113,675.43

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Solution

The fourth proportional to 198,531.03, 273,978.95 and 113,675.43 is: 156,875.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,531.03 : 273,978.95 = 113,675.43 : x
  2. Step 2: Convert to fraction form
    198,531.03/273,978.95 = 113,675.43/x
  3. Step 3: Cross multiply
    198,531.03x = 273,978.95 × 113,675.43
  4. Step 4: Simplify right side
    198,531.03x = 31,144,674,383.82
  5. Step 5: Solve for x
    x = 31,144,674,383.82/198,531.03
  6. Step 6: Final answer
    x = 156,875.60

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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.