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Finding the Fourth Proportional to 198,688.55, 274,291.74 and 153,264.56

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Solution

The fourth proportional to 198,688.55, 274,291.74 and 153,264.56 is: 211,583.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,688.55 : 274,291.74 = 153,264.56 : x
  2. Step 2: Convert to fraction form
    198,688.55/274,291.74 = 153,264.56/x
  3. Step 3: Cross multiply
    198,688.55x = 274,291.74 × 153,264.56
  4. Step 4: Simplify right side
    198,688.55x = 42,039,201,471.28
  5. Step 5: Solve for x
    x = 42,039,201,471.28/198,688.55
  6. Step 6: Final answer
    x = 211,583.42

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