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Finding the Fourth Proportional to 20,661.01, 31,000.71 and 11,776.02

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Solution

The fourth proportional to 20,661.01, 31,000.71 and 11,776.02 is: 17,669.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.01 : 31,000.71 = 11,776.02 : x
  2. Step 2: Convert to fraction form
    20,661.01/31,000.71 = 11,776.02/x
  3. Step 3: Cross multiply
    20,661.01x = 31,000.71 × 11,776.02
  4. Step 4: Simplify right side
    20,661.01x = 365,064,980.97
  5. Step 5: Solve for x
    x = 365,064,980.97/20,661.01
  6. Step 6: Final answer
    x = 17,669.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.