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Finding the Fourth Proportional to 123,069.40, 184,604.10 and 66,936.40

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Solution

The fourth proportional to 123,069.40, 184,604.10 and 66,936.40 is: 100,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,069.40 : 184,604.10 = 66,936.40 : x
  2. Step 2: Convert to fraction form
    123,069.40/184,604.10 = 66,936.40/x
  3. Step 3: Cross multiply
    123,069.40x = 184,604.10 × 66,936.40
  4. Step 4: Simplify right side
    123,069.40x = 12,356,733,879.24
  5. Step 5: Solve for x
    x = 12,356,733,879.24/123,069.40
  6. Step 6: Final answer
    x = 100,404.60

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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.