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Finding the Fourth Proportional to 29,361.88, 40,507.86 and 16,779.88

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Solution

The fourth proportional to 29,361.88, 40,507.86 and 16,779.88 is: 23,149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,361.88 : 40,507.86 = 16,779.88 : x
  2. Step 2: Convert to fraction form
    29,361.88/40,507.86 = 16,779.88/x
  3. Step 3: Cross multiply
    29,361.88x = 40,507.86 × 16,779.88
  4. Step 4: Simplify right side
    29,361.88x = 679,717,029.86
  5. Step 5: Solve for x
    x = 679,717,029.86/29,361.88
  6. Step 6: Final answer
    x = 23,149.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.