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Finding the Fourth Proportional to 19,891.48, 29,832.58 and 8,792.12

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Solution

The fourth proportional to 19,891.48, 29,832.58 and 8,792.12 is: 13,186.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,891.48 : 29,832.58 = 8,792.12 : x
  2. Step 2: Convert to fraction form
    19,891.48/29,832.58 = 8,792.12/x
  3. Step 3: Cross multiply
    19,891.48x = 29,832.58 × 8,792.12
  4. Step 4: Simplify right side
    19,891.48x = 262,291,430.15
  5. Step 5: Solve for x
    x = 262,291,430.15/19,891.48
  6. Step 6: Final answer
    x = 13,186.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.