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Finding the Fourth Proportional to 274,374.74, 411,569.40 and 74,699.21

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Solution

The fourth proportional to 274,374.74, 411,569.40 and 74,699.21 is: 112,050.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,374.74 : 411,569.40 = 74,699.21 : x
  2. Step 2: Convert to fraction form
    274,374.74/411,569.40 = 74,699.21/x
  3. Step 3: Cross multiply
    274,374.74x = 411,569.40 × 74,699.21
  4. Step 4: Simplify right side
    274,374.74x = 30,743,906,608.83
  5. Step 5: Solve for x
    x = 30,743,906,608.83/274,374.74
  6. Step 6: Final answer
    x = 112,050.79

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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.