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Finding the Fourth Proportional to 23,907.80, 35,861.70 and 20,106.20

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Solution

The fourth proportional to 23,907.80, 35,861.70 and 20,106.20 is: 30,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,907.80 : 35,861.70 = 20,106.20 : x
  2. Step 2: Convert to fraction form
    23,907.80/35,861.70 = 20,106.20/x
  3. Step 3: Cross multiply
    23,907.80x = 35,861.70 × 20,106.20
  4. Step 4: Simplify right side
    23,907.80x = 721,042,512.54
  5. Step 5: Solve for x
    x = 721,042,512.54/23,907.80
  6. Step 6: Final answer
    x = 30,159.30

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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.