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Finding the Fourth Proportional to 43,487.64, 65,231.46 and 10,655.64

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Solution

The fourth proportional to 43,487.64, 65,231.46 and 10,655.64 is: 15,983.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,487.64 : 65,231.46 = 10,655.64 : x
  2. Step 2: Convert to fraction form
    43,487.64/65,231.46 = 10,655.64/x
  3. Step 3: Cross multiply
    43,487.64x = 65,231.46 × 10,655.64
  4. Step 4: Simplify right side
    43,487.64x = 695,082,954.43
  5. Step 5: Solve for x
    x = 695,082,954.43/43,487.64
  6. Step 6: Final answer
    x = 15,983.46

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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.