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Finding the Fourth Proportional to 31,372.99, 43,293.54 and 19,436.07

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Solution

The fourth proportional to 31,372.99, 43,293.54 and 19,436.07 is: 26,821.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,372.99 : 43,293.54 = 19,436.07 : x
  2. Step 2: Convert to fraction form
    31,372.99/43,293.54 = 19,436.07/x
  3. Step 3: Cross multiply
    31,372.99x = 43,293.54 × 19,436.07
  4. Step 4: Simplify right side
    31,372.99x = 841,456,156.37
  5. Step 5: Solve for x
    x = 841,456,156.37/31,372.99
  6. Step 6: Final answer
    x = 26,821.04

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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.