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Finding the Fourth Proportional to 18,782.94, 25,868.19 and 14,518.29

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Solution

The fourth proportional to 18,782.94, 25,868.19 and 14,518.29 is: 19,994.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782.94 : 25,868.19 = 14,518.29 : x
  2. Step 2: Convert to fraction form
    18,782.94/25,868.19 = 14,518.29/x
  3. Step 3: Cross multiply
    18,782.94x = 25,868.19 × 14,518.29
  4. Step 4: Simplify right side
    18,782.94x = 375,561,767.64
  5. Step 5: Solve for x
    x = 375,561,767.64/18,782.94
  6. Step 6: Final answer
    x = 19,994.84

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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.