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Finding the Fourth Proportional to 13,362.80, 20,058.60 and 7,530.80

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Solution

The fourth proportional to 13,362.80, 20,058.60 and 7,530.80 is: 11,304.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.80 : 20,058.60 = 7,530.80 : x
  2. Step 2: Convert to fraction form
    13,362.80/20,058.60 = 7,530.80/x
  3. Step 3: Cross multiply
    13,362.80x = 20,058.60 × 7,530.80
  4. Step 4: Simplify right side
    13,362.80x = 151,057,304.88
  5. Step 5: Solve for x
    x = 151,057,304.88/13,362.80
  6. Step 6: Final answer
    x = 11,304.32

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1.5x scale

Why These Related Problems?

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