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Finding the Fourth Proportional to 57,530.32, 79,372.81 and 33,640.08

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Solution

The fourth proportional to 57,530.32, 79,372.81 and 33,640.08 is: 46,412.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,530.32 : 79,372.81 = 33,640.08 : x
  2. Step 2: Convert to fraction form
    57,530.32/79,372.81 = 33,640.08/x
  3. Step 3: Cross multiply
    57,530.32x = 79,372.81 × 33,640.08
  4. Step 4: Simplify right side
    57,530.32x = 2,670,107,422.63
  5. Step 5: Solve for x
    x = 2,670,107,422.63/57,530.32
  6. Step 6: Final answer
    x = 46,412.18

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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.