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Finding the Fourth Proportional to 49,836.40, 74,783.40 and 18,674.80

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Solution

The fourth proportional to 49,836.40, 74,783.40 and 18,674.80 is: 28,022.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,836.40 : 74,783.40 = 18,674.80 : x
  2. Step 2: Convert to fraction form
    49,836.40/74,783.40 = 18,674.80/x
  3. Step 3: Cross multiply
    49,836.40x = 74,783.40 × 18,674.80
  4. Step 4: Simplify right side
    49,836.40x = 1,396,565,038.32
  5. Step 5: Solve for x
    x = 1,396,565,038.32/49,836.40
  6. Step 6: Final answer
    x = 28,022.99

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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.