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Finding the Fourth Proportional to 13,058.46, 18,020.52 and 7,090.11

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Solution

The fourth proportional to 13,058.46, 18,020.52 and 7,090.11 is: 9,784.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.46 : 18,020.52 = 7,090.11 : x
  2. Step 2: Convert to fraction form
    13,058.46/18,020.52 = 7,090.11/x
  3. Step 3: Cross multiply
    13,058.46x = 18,020.52 × 7,090.11
  4. Step 4: Simplify right side
    13,058.46x = 127,767,469.06
  5. Step 5: Solve for x
    x = 127,767,469.06/13,058.46
  6. Step 6: Final answer
    x = 9,784.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.