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Finding the Fourth Proportional to 57,804.60, 86,713.85 and 20,356.94

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Solution

The fourth proportional to 57,804.60, 86,713.85 and 20,356.94 is: 30,537.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,804.60 : 86,713.85 = 20,356.94 : x
  2. Step 2: Convert to fraction form
    57,804.60/86,713.85 = 20,356.94/x
  3. Step 3: Cross multiply
    57,804.60x = 86,713.85 × 20,356.94
  4. Step 4: Simplify right side
    57,804.60x = 1,765,228,208.05
  5. Step 5: Solve for x
    x = 1,765,228,208.05/57,804.60
  6. Step 6: Final answer
    x = 30,537.85

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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.