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Finding the Fourth Proportional to 13,994.59, 19,312.25 and 7,621.25

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Solution

The fourth proportional to 13,994.59, 19,312.25 and 7,621.25 is: 10,517.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.59 : 19,312.25 = 7,621.25 : x
  2. Step 2: Convert to fraction form
    13,994.59/19,312.25 = 7,621.25/x
  3. Step 3: Cross multiply
    13,994.59x = 19,312.25 × 7,621.25
  4. Step 4: Simplify right side
    13,994.59x = 147,183,485.31
  5. Step 5: Solve for x
    x = 147,183,485.31/13,994.59
  6. Step 6: Final answer
    x = 10,517.17

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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.