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Finding the Fourth Proportional to 43,784.81, 65,686.82 and 14,205.63

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Solution

The fourth proportional to 43,784.81, 65,686.82 and 14,205.63 is: 21,311.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,784.81 : 65,686.82 = 14,205.63 : x
  2. Step 2: Convert to fraction form
    43,784.81/65,686.82 = 14,205.63/x
  3. Step 3: Cross multiply
    43,784.81x = 65,686.82 × 14,205.63
  4. Step 4: Simplify right side
    43,784.81x = 933,122,589.77
  5. Step 5: Solve for x
    x = 933,122,589.77/43,784.81
  6. Step 6: Final answer
    x = 21,311.56

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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.