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Finding the Fourth Proportional to 19,869.44, 29,810.12 and 8,017.11

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Solution

The fourth proportional to 19,869.44, 29,810.12 and 8,017.11 is: 12,028.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.44 : 29,810.12 = 8,017.11 : x
  2. Step 2: Convert to fraction form
    19,869.44/29,810.12 = 8,017.11/x
  3. Step 3: Cross multiply
    19,869.44x = 29,810.12 × 8,017.11
  4. Step 4: Simplify right side
    19,869.44x = 238,990,971.07
  5. Step 5: Solve for x
    x = 238,990,971.07/19,869.44
  6. Step 6: Final answer
    x = 12,028.07

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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.