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Finding the Fourth Proportional to 19,993.10, 27,590.40 and 10,919.06

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Solution

The fourth proportional to 19,993.10, 27,590.40 and 10,919.06 is: 15,068.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.10 : 27,590.40 = 10,919.06 : x
  2. Step 2: Convert to fraction form
    19,993.10/27,590.40 = 10,919.06/x
  3. Step 3: Cross multiply
    19,993.10x = 27,590.40 × 10,919.06
  4. Step 4: Simplify right side
    19,993.10x = 301,261,233.02
  5. Step 5: Solve for x
    x = 301,261,233.02/19,993.10
  6. Step 6: Final answer
    x = 15,068.26

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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.