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Finding the Fourth Proportional to 51,361.91, 70,878.08 and 28,701.09

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Solution

The fourth proportional to 51,361.91, 70,878.08 and 28,701.09 is: 39,606.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,361.91 : 70,878.08 = 28,701.09 : x
  2. Step 2: Convert to fraction form
    51,361.91/70,878.08 = 28,701.09/x
  3. Step 3: Cross multiply
    51,361.91x = 70,878.08 × 28,701.09
  4. Step 4: Simplify right side
    51,361.91x = 2,034,278,063.42
  5. Step 5: Solve for x
    x = 2,034,278,063.42/51,361.91
  6. Step 6: Final answer
    x = 39,606.74

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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.