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Finding the Fourth Proportional to 12,599.34, 18,915.62 and 7,339.20

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Solution

The fourth proportional to 12,599.34, 18,915.62 and 7,339.20 is: 11,018.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,599.34 : 18,915.62 = 7,339.20 : x
  2. Step 2: Convert to fraction form
    12,599.34/18,915.62 = 7,339.20/x
  3. Step 3: Cross multiply
    12,599.34x = 18,915.62 × 7,339.20
  4. Step 4: Simplify right side
    12,599.34x = 138,825,518.30
  5. Step 5: Solve for x
    x = 138,825,518.30/12,599.34
  6. Step 6: Final answer
    x = 11,018.48

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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.