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Finding the Fourth Proportional to 13,376.48, 18,458.04 and 7,407.32

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Solution

The fourth proportional to 13,376.48, 18,458.04 and 7,407.32 is: 10,221.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.48 : 18,458.04 = 7,407.32 : x
  2. Step 2: Convert to fraction form
    13,376.48/18,458.04 = 7,407.32/x
  3. Step 3: Cross multiply
    13,376.48x = 18,458.04 × 7,407.32
  4. Step 4: Simplify right side
    13,376.48x = 136,724,608.85
  5. Step 5: Solve for x
    x = 136,724,608.85/13,376.48
  6. Step 6: Final answer
    x = 10,221.27

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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.