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Finding the Fourth Proportional to 112,358.44, 155,014.35 and 66,408.44

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Solution

The fourth proportional to 112,358.44, 155,014.35 and 66,408.44 is: 91,619.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,358.44 : 155,014.35 = 66,408.44 : x
  2. Step 2: Convert to fraction form
    112,358.44/155,014.35 = 66,408.44/x
  3. Step 3: Cross multiply
    112,358.44x = 155,014.35 × 66,408.44
  4. Step 4: Simplify right side
    112,358.44x = 10,294,260,510.56
  5. Step 5: Solve for x
    x = 10,294,260,510.56/112,358.44
  6. Step 6: Final answer
    x = 91,619.83

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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.