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Finding the Fourth Proportional to 21,045.48, 29,042.58 and 11,485.56

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Solution

The fourth proportional to 21,045.48, 29,042.58 and 11,485.56 is: 15,849.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.48 : 29,042.58 = 11,485.56 : x
  2. Step 2: Convert to fraction form
    21,045.48/29,042.58 = 11,485.56/x
  3. Step 3: Cross multiply
    21,045.48x = 29,042.58 × 11,485.56
  4. Step 4: Simplify right side
    21,045.48x = 333,570,295.14
  5. Step 5: Solve for x
    x = 333,570,295.14/21,045.48
  6. Step 6: Final answer
    x = 15,849.97

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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.