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Finding the Fourth Proportional to 504,355.21, 696,005.62 and 274,912.45

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Solution

The fourth proportional to 504,355.21, 696,005.62 and 274,912.45 is: 379,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,355.21 : 696,005.62 = 274,912.45 : x
  2. Step 2: Convert to fraction form
    504,355.21/696,005.62 = 274,912.45/x
  3. Step 3: Cross multiply
    504,355.21x = 696,005.62 × 274,912.45
  4. Step 4: Simplify right side
    504,355.21x = 191,340,610,207.97
  5. Step 5: Solve for x
    x = 191,340,610,207.97/504,355.21
  6. Step 6: Final answer
    x = 379,376.69

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Why These Related Problems?

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