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Finding the Fourth Proportional to 334,428.40, 501,059.40 and 281,940.40

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Solution

The fourth proportional to 334,428.40, 501,059.40 and 281,940.40 is: 422,418.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,428.40 : 501,059.40 = 281,940.40 : x
  2. Step 2: Convert to fraction form
    334,428.40/501,059.40 = 281,940.40/x
  3. Step 3: Cross multiply
    334,428.40x = 501,059.40 × 281,940.40
  4. Step 4: Simplify right side
    334,428.40x = 141,268,887,659.76
  5. Step 5: Solve for x
    x = 141,268,887,659.76/334,428.40
  6. Step 6: Final answer
    x = 422,418.93

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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.