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Finding the Fourth Proportional to 257,236.44, 385,759.89 and 88,713.51

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Solution

The fourth proportional to 257,236.44, 385,759.89 and 88,713.51 is: 133,037.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,236.44 : 385,759.89 = 88,713.51 : x
  2. Step 2: Convert to fraction form
    257,236.44/385,759.89 = 88,713.51/x
  3. Step 3: Cross multiply
    257,236.44x = 385,759.89 × 88,713.51
  4. Step 4: Simplify right side
    257,236.44x = 34,222,113,859.11
  5. Step 5: Solve for x
    x = 34,222,113,859.11/257,236.44
  6. Step 6: Final answer
    x = 133,037.58

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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.