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Finding the Fourth Proportional to 19,273.84, 28,912.74 and 7,276.10

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Solution

The fourth proportional to 19,273.84, 28,912.74 and 7,276.10 is: 10,914.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,273.84 : 28,912.74 = 7,276.10 : x
  2. Step 2: Convert to fraction form
    19,273.84/28,912.74 = 7,276.10/x
  3. Step 3: Cross multiply
    19,273.84x = 28,912.74 × 7,276.10
  4. Step 4: Simplify right side
    19,273.84x = 210,371,842.95
  5. Step 5: Solve for x
    x = 210,371,842.95/19,273.84
  6. Step 6: Final answer
    x = 10,914.89

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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.