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Finding the Fourth Proportional to 381,603.40, 571,944.30 and 194,518.60

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Solution

The fourth proportional to 381,603.40, 571,944.30 and 194,518.60 is: 291,543.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,603.40 : 571,944.30 = 194,518.60 : x
  2. Step 2: Convert to fraction form
    381,603.40/571,944.30 = 194,518.60/x
  3. Step 3: Cross multiply
    381,603.40x = 571,944.30 × 194,518.60
  4. Step 4: Simplify right side
    381,603.40x = 111,253,804,513.98
  5. Step 5: Solve for x
    x = 111,253,804,513.98/381,603.40
  6. Step 6: Final answer
    x = 291,543.01

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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.