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Finding the Fourth Proportional to 13,051.64, 18,012.15 and 7,386.39

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Solution

The fourth proportional to 13,051.64, 18,012.15 and 7,386.39 is: 10,193.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,051.64 : 18,012.15 = 7,386.39 : x
  2. Step 2: Convert to fraction form
    13,051.64/18,012.15 = 7,386.39/x
  3. Step 3: Cross multiply
    13,051.64x = 18,012.15 × 7,386.39
  4. Step 4: Simplify right side
    13,051.64x = 133,044,764.64
  5. Step 5: Solve for x
    x = 133,044,764.64/13,051.64
  6. Step 6: Final answer
    x = 10,193.72

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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.