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Finding the Fourth Proportional to 276,359.60, 414,539.40 and 191,941.40

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Solution

The fourth proportional to 276,359.60, 414,539.40 and 191,941.40 is: 287,912.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,359.60 : 414,539.40 = 191,941.40 : x
  2. Step 2: Convert to fraction form
    276,359.60/414,539.40 = 191,941.40/x
  3. Step 3: Cross multiply
    276,359.60x = 414,539.40 × 191,941.40
  4. Step 4: Simplify right side
    276,359.60x = 79,567,272,791.16
  5. Step 5: Solve for x
    x = 79,567,272,791.16/276,359.60
  6. Step 6: Final answer
    x = 287,912.10

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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.