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Finding the Fourth Proportional to 13,058.50, 18,020.74 and 7,090.17

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Solution

The fourth proportional to 13,058.50, 18,020.74 and 7,090.17 is: 9,784.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.50 : 18,020.74 = 7,090.17 : x
  2. Step 2: Convert to fraction form
    13,058.50/18,020.74 = 7,090.17/x
  3. Step 3: Cross multiply
    13,058.50x = 18,020.74 × 7,090.17
  4. Step 4: Simplify right side
    13,058.50x = 127,770,110.13
  5. Step 5: Solve for x
    x = 127,770,110.13/13,058.50
  6. Step 6: Final answer
    x = 9,784.44

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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.