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Finding the Fourth Proportional to 12,792.12, 19,188.21 and 4,995.47

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Solution

The fourth proportional to 12,792.12, 19,188.21 and 4,995.47 is: 7,493.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,792.12 : 19,188.21 = 4,995.47 : x
  2. Step 2: Convert to fraction form
    12,792.12/19,188.21 = 4,995.47/x
  3. Step 3: Cross multiply
    12,792.12x = 19,188.21 × 4,995.47
  4. Step 4: Simplify right side
    12,792.12x = 95,854,031.47
  5. Step 5: Solve for x
    x = 95,854,031.47/12,792.12
  6. Step 6: Final answer
    x = 7,493.21

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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.