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Finding the Fourth Proportional to 20,797.64, 28,702.74 and 11,848.04

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Solution

The fourth proportional to 20,797.64, 28,702.74 and 11,848.04 is: 16,351.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.64 : 28,702.74 = 11,848.04 : x
  2. Step 2: Convert to fraction form
    20,797.64/28,702.74 = 11,848.04/x
  3. Step 3: Cross multiply
    20,797.64x = 28,702.74 × 11,848.04
  4. Step 4: Simplify right side
    20,797.64x = 340,071,211.63
  5. Step 5: Solve for x
    x = 340,071,211.63/20,797.64
  6. Step 6: Final answer
    x = 16,351.43

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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.