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Finding the Fourth Proportional to 13,135.46, 18,133.56 and 8,360.24

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Solution

The fourth proportional to 13,135.46, 18,133.56 and 8,360.24 is: 11,541.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.46 : 18,133.56 = 8,360.24 : x
  2. Step 2: Convert to fraction form
    13,135.46/18,133.56 = 8,360.24/x
  3. Step 3: Cross multiply
    13,135.46x = 18,133.56 × 8,360.24
  4. Step 4: Simplify right side
    13,135.46x = 151,600,913.65
  5. Step 5: Solve for x
    x = 151,600,913.65/13,135.46
  6. Step 6: Final answer
    x = 11,541.35

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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.