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Finding the Fourth Proportional to 13,380.93, 18,463.77 and 7,412.40

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Solution

The fourth proportional to 13,380.93, 18,463.77 and 7,412.40 is: 10,228.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.93 : 18,463.77 = 7,412.40 : x
  2. Step 2: Convert to fraction form
    13,380.93/18,463.77 = 7,412.40/x
  3. Step 3: Cross multiply
    13,380.93x = 18,463.77 × 7,412.40
  4. Step 4: Simplify right side
    13,380.93x = 136,860,848.75
  5. Step 5: Solve for x
    x = 136,860,848.75/13,380.93
  6. Step 6: Final answer
    x = 10,228.05

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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.