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Finding the Fourth Proportional to 19,281.92, 28,912.49 and 10,402.01

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Solution

The fourth proportional to 19,281.92, 28,912.49 and 10,402.01 is: 15,597.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,281.92 : 28,912.49 = 10,402.01 : x
  2. Step 2: Convert to fraction form
    19,281.92/28,912.49 = 10,402.01/x
  3. Step 3: Cross multiply
    19,281.92x = 28,912.49 × 10,402.01
  4. Step 4: Simplify right side
    19,281.92x = 300,748,010.10
  5. Step 5: Solve for x
    x = 300,748,010.10/19,281.92
  6. Step 6: Final answer
    x = 15,597.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.