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Finding the Fourth Proportional to 13,065.20, 19,602.60 and 5,274.80

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Solution

The fourth proportional to 13,065.20, 19,602.60 and 5,274.80 is: 7,914.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,065.20 : 19,602.60 = 5,274.80 : x
  2. Step 2: Convert to fraction form
    13,065.20/19,602.60 = 5,274.80/x
  3. Step 3: Cross multiply
    13,065.20x = 19,602.60 × 5,274.80
  4. Step 4: Simplify right side
    13,065.20x = 103,399,794.48
  5. Step 5: Solve for x
    x = 103,399,794.48/13,065.20
  6. Step 6: Final answer
    x = 7,914.14

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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.