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Finding the Fourth Proportional to 13,366.60, 18,445.44 and 7,398.28

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Solution

The fourth proportional to 13,366.60, 18,445.44 and 7,398.28 is: 10,209.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,366.60 : 18,445.44 = 7,398.28 : x
  2. Step 2: Convert to fraction form
    13,366.60/18,445.44 = 7,398.28/x
  3. Step 3: Cross multiply
    13,366.60x = 18,445.44 × 7,398.28
  4. Step 4: Simplify right side
    13,366.60x = 136,464,529.84
  5. Step 5: Solve for x
    x = 136,464,529.84/13,366.60
  6. Step 6: Final answer
    x = 10,209.37

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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.