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Finding the Fourth Proportional to 43,856.60, 65,785.50 and 14,274.56

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Solution

The fourth proportional to 43,856.60, 65,785.50 and 14,274.56 is: 21,412.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,856.60 : 65,785.50 = 14,274.56 : x
  2. Step 2: Convert to fraction form
    43,856.60/65,785.50 = 14,274.56/x
  3. Step 3: Cross multiply
    43,856.60x = 65,785.50 × 14,274.56
  4. Step 4: Simplify right side
    43,856.60x = 939,059,066.88
  5. Step 5: Solve for x
    x = 939,059,066.88/43,856.60
  6. Step 6: Final answer
    x = 21,412.04

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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.