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Finding the Fourth Proportional to 43,797.60, 65,680.20 and 14,216.40

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Solution

The fourth proportional to 43,797.60, 65,680.20 and 14,216.40 is: 21,319.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,797.60 : 65,680.20 = 14,216.40 : x
  2. Step 2: Convert to fraction form
    43,797.60/65,680.20 = 14,216.40/x
  3. Step 3: Cross multiply
    43,797.60x = 65,680.20 × 14,216.40
  4. Step 4: Simplify right side
    43,797.60x = 933,735,995.28
  5. Step 5: Solve for x
    x = 933,735,995.28/43,797.60
  6. Step 6: Final answer
    x = 21,319.34

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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.