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Finding the Fourth Proportional to 21,814.56, 29,894.32 and 19,715.04

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Solution

The fourth proportional to 21,814.56, 29,894.32 and 19,715.04 is: 27,017.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,814.56 : 29,894.32 = 19,715.04 : x
  2. Step 2: Convert to fraction form
    21,814.56/29,894.32 = 19,715.04/x
  3. Step 3: Cross multiply
    21,814.56x = 29,894.32 × 19,715.04
  4. Step 4: Simplify right side
    21,814.56x = 589,367,714.57
  5. Step 5: Solve for x
    x = 589,367,714.57/21,814.56
  6. Step 6: Final answer
    x = 27,017.17

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.