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Finding the Fourth Proportional to 59,783.44, 89,631.24 and 28,640.56

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Solution

The fourth proportional to 59,783.44, 89,631.24 and 28,640.56 is: 42,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,783.44 : 89,631.24 = 28,640.56 : x
  2. Step 2: Convert to fraction form
    59,783.44/89,631.24 = 28,640.56/x
  3. Step 3: Cross multiply
    59,783.44x = 89,631.24 × 28,640.56
  4. Step 4: Simplify right side
    59,783.44x = 2,567,088,907.09
  5. Step 5: Solve for x
    x = 2,567,088,907.09/59,783.44
  6. Step 6: Final answer
    x = 42,939.80

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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.