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Finding the Fourth Proportional to 18,993.19, 26,167.71 and 13,245.16

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Solution

The fourth proportional to 18,993.19, 26,167.71 and 13,245.16 is: 18,248.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.19 : 26,167.71 = 13,245.16 : x
  2. Step 2: Convert to fraction form
    18,993.19/26,167.71 = 13,245.16/x
  3. Step 3: Cross multiply
    18,993.19x = 26,167.71 × 13,245.16
  4. Step 4: Simplify right side
    18,993.19x = 346,595,505.78
  5. Step 5: Solve for x
    x = 346,595,505.78/18,993.19
  6. Step 6: Final answer
    x = 18,248.41

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Half scale
Find fourth proportional to 37,986.38, 52,335.42 and 26,490.32
Double scale
Find fourth proportional to 18,994.19, 26,169.09 and 13,246.16
Similar ratio
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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.