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Finding the Fourth Proportional to 211,993.20, 317,892.60 and 93,603.60

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Solution

The fourth proportional to 211,993.20, 317,892.60 and 93,603.60 is: 140,362.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,993.20 : 317,892.60 = 93,603.60 : x
  2. Step 2: Convert to fraction form
    211,993.20/317,892.60 = 93,603.60/x
  3. Step 3: Cross multiply
    211,993.20x = 317,892.60 × 93,603.60
  4. Step 4: Simplify right side
    211,993.20x = 29,755,891,773.36
  5. Step 5: Solve for x
    x = 29,755,891,773.36/211,993.20
  6. Step 6: Final answer
    x = 140,362.48

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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.