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Finding the Fourth Proportional to 43,361.61, 65,046.75 and 11,772.18

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Solution

The fourth proportional to 43,361.61, 65,046.75 and 11,772.18 is: 17,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,361.61 : 65,046.75 = 11,772.18 : x
  2. Step 2: Convert to fraction form
    43,361.61/65,046.75 = 11,772.18/x
  3. Step 3: Cross multiply
    43,361.61x = 65,046.75 × 11,772.18
  4. Step 4: Simplify right side
    43,361.61x = 765,742,049.42
  5. Step 5: Solve for x
    x = 765,742,049.42/43,361.61
  6. Step 6: Final answer
    x = 17,659.45

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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.