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Finding the Fourth Proportional to 38,907.42, 57,991.02 and 36,692.88

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Solution

The fourth proportional to 38,907.42, 57,991.02 and 36,692.88 is: 54,690.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,907.42 : 57,991.02 = 36,692.88 : x
  2. Step 2: Convert to fraction form
    38,907.42/57,991.02 = 36,692.88/x
  3. Step 3: Cross multiply
    38,907.42x = 57,991.02 × 36,692.88
  4. Step 4: Simplify right side
    38,907.42x = 2,127,857,537.94
  5. Step 5: Solve for x
    x = 2,127,857,537.94/38,907.42
  6. Step 6: Final answer
    x = 54,690.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.