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Finding the Fourth Proportional to 38,907.56, 53,692.68 and 22,140.56

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Solution

The fourth proportional to 38,907.56, 53,692.68 and 22,140.56 is: 30,554.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,907.56 : 53,692.68 = 22,140.56 : x
  2. Step 2: Convert to fraction form
    38,907.56/53,692.68 = 22,140.56/x
  3. Step 3: Cross multiply
    38,907.56x = 53,692.68 × 22,140.56
  4. Step 4: Simplify right side
    38,907.56x = 1,188,786,003.10
  5. Step 5: Solve for x
    x = 1,188,786,003.10/38,907.56
  6. Step 6: Final answer
    x = 30,554.11

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1.5x scale

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.