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Finding the Fourth Proportional to 13,370.49, 18,451.05 and 7,402.04

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Solution

The fourth proportional to 13,370.49, 18,451.05 and 7,402.04 is: 10,214.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.49 : 18,451.05 = 7,402.04 : x
  2. Step 2: Convert to fraction form
    13,370.49/18,451.05 = 7,402.04/x
  3. Step 3: Cross multiply
    13,370.49x = 18,451.05 × 7,402.04
  4. Step 4: Simplify right side
    13,370.49x = 136,575,317.89
  5. Step 5: Solve for x
    x = 136,575,317.89/13,370.49
  6. Step 6: Final answer
    x = 10,214.68

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