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Finding the Fourth Proportional to 336,643.20, 504,273.60 and 274,435.20

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Solution

The fourth proportional to 336,643.20, 504,273.60 and 274,435.20 is: 411,089.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,643.20 : 504,273.60 = 274,435.20 : x
  2. Step 2: Convert to fraction form
    336,643.20/504,273.60 = 274,435.20/x
  3. Step 3: Cross multiply
    336,643.20x = 504,273.60 × 274,435.20
  4. Step 4: Simplify right side
    336,643.20x = 138,390,426,270.72
  5. Step 5: Solve for x
    x = 138,390,426,270.72/336,643.20
  6. Step 6: Final answer
    x = 411,089.33

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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.