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Finding the Fourth Proportional to 18,507.33, 25,523.95 and 13,119.10

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Solution

The fourth proportional to 18,507.33, 25,523.95 and 13,119.10 is: 18,092.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,507.33 : 25,523.95 = 13,119.10 : x
  2. Step 2: Convert to fraction form
    18,507.33/25,523.95 = 13,119.10/x
  3. Step 3: Cross multiply
    18,507.33x = 25,523.95 × 13,119.10
  4. Step 4: Simplify right side
    18,507.33x = 334,851,252.45
  5. Step 5: Solve for x
    x = 334,851,252.45/18,507.33
  6. Step 6: Final answer
    x = 18,092.90

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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.