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Finding the Fourth Proportional to 356,745.32, 535,173.12 and 120,069.44

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Solution

The fourth proportional to 356,745.32, 535,173.12 and 120,069.44 is: 180,122.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,745.32 : 535,173.12 = 120,069.44 : x
  2. Step 2: Convert to fraction form
    356,745.32/535,173.12 = 120,069.44/x
  3. Step 3: Cross multiply
    356,745.32x = 535,173.12 × 120,069.44
  4. Step 4: Simplify right side
    356,745.32x = 64,257,936,821.45
  5. Step 5: Solve for x
    x = 64,257,936,821.45/356,745.32
  6. Step 6: Final answer
    x = 180,122.72

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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.