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Finding the Fourth Proportional to 13,675.16, 18,871.79 and 8,013.26

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Solution

The fourth proportional to 13,675.16, 18,871.79 and 8,013.26 is: 11,058.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,675.16 : 18,871.79 = 8,013.26 : x
  2. Step 2: Convert to fraction form
    13,675.16/18,871.79 = 8,013.26/x
  3. Step 3: Cross multiply
    13,675.16x = 18,871.79 × 8,013.26
  4. Step 4: Simplify right side
    13,675.16x = 151,224,567.05
  5. Step 5: Solve for x
    x = 151,224,567.05/13,675.16
  6. Step 6: Final answer
    x = 11,058.34

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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.