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Finding the Fourth Proportional to 20,166.10, 28,261.70 and 20,166.10

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Solution

The fourth proportional to 20,166.10, 28,261.70 and 20,166.10 is: 28,261.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,166.10 : 28,261.70 = 20,166.10 : x
  2. Step 2: Convert to fraction form
    20,166.10/28,261.70 = 20,166.10/x
  3. Step 3: Cross multiply
    20,166.10x = 28,261.70 × 20,166.10
  4. Step 4: Simplify right side
    20,166.10x = 569,928,268.37
  5. Step 5: Solve for x
    x = 569,928,268.37/20,166.10
  6. Step 6: Final answer
    x = 28,261.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.