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Finding the Fourth Proportional to 7,892.73, 10,891.53 and 4,355.73

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Solution

The fourth proportional to 7,892.73, 10,891.53 and 4,355.73 is: 6,010.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.73 : 10,891.53 = 4,355.73 : x
  2. Step 2: Convert to fraction form
    7,892.73/10,891.53 = 4,355.73/x
  3. Step 3: Cross multiply
    7,892.73x = 10,891.53 × 4,355.73
  4. Step 4: Simplify right side
    7,892.73x = 47,440,563.97
  5. Step 5: Solve for x
    x = 47,440,563.97/7,892.73
  6. Step 6: Final answer
    x = 6,010.67

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1.5x scale

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.