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Finding the Fourth Proportional to 18,736.03, 25,860.93 and 10,780.82

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Solution

The fourth proportional to 18,736.03, 25,860.93 and 10,780.82 is: 14,880.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.03 : 25,860.93 = 10,780.82 : x
  2. Step 2: Convert to fraction form
    18,736.03/25,860.93 = 10,780.82/x
  3. Step 3: Cross multiply
    18,736.03x = 25,860.93 × 10,780.82
  4. Step 4: Simplify right side
    18,736.03x = 278,802,031.36
  5. Step 5: Solve for x
    x = 278,802,031.36/18,736.03
  6. Step 6: Final answer
    x = 14,880.53

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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.