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Finding the Fourth Proportional to 190,362.78, 262,631.13 and 113,884.08

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Solution

The fourth proportional to 190,362.78, 262,631.13 and 113,884.08 is: 157,118.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,362.78 : 262,631.13 = 113,884.08 : x
  2. Step 2: Convert to fraction form
    190,362.78/262,631.13 = 113,884.08/x
  3. Step 3: Cross multiply
    190,362.78x = 262,631.13 × 113,884.08
  4. Step 4: Simplify right side
    190,362.78x = 29,909,504,168.38
  5. Step 5: Solve for x
    x = 29,909,504,168.38/190,362.78
  6. Step 6: Final answer
    x = 157,118.44

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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.