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Finding the Fourth Proportional to 18,798.33, 28,190.21 and 10,028.46

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Solution

The fourth proportional to 18,798.33, 28,190.21 and 10,028.46 is: 15,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.33 : 28,190.21 = 10,028.46 : x
  2. Step 2: Convert to fraction form
    18,798.33/28,190.21 = 10,028.46/x
  3. Step 3: Cross multiply
    18,798.33x = 28,190.21 × 10,028.46
  4. Step 4: Simplify right side
    18,798.33x = 282,704,343.23
  5. Step 5: Solve for x
    x = 282,704,343.23/18,798.33
  6. Step 6: Final answer
    x = 15,038.80

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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.