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Finding the Fourth Proportional to 66,672.44, 99,993.90 and 19,277.24

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Solution

The fourth proportional to 66,672.44, 99,993.90 and 19,277.24 is: 28,911.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,672.44 : 99,993.90 = 19,277.24 : x
  2. Step 2: Convert to fraction form
    66,672.44/99,993.90 = 19,277.24/x
  3. Step 3: Cross multiply
    66,672.44x = 99,993.90 × 19,277.24
  4. Step 4: Simplify right side
    66,672.44x = 1,927,606,408.84
  5. Step 5: Solve for x
    x = 1,927,606,408.84/66,672.44
  6. Step 6: Final answer
    x = 28,911.59

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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.