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Finding the Fourth Proportional to 201,961.56, 278,722.97 and 111,333.64

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Solution

The fourth proportional to 201,961.56, 278,722.97 and 111,333.64 is: 153,649.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,961.56 : 278,722.97 = 111,333.64 : x
  2. Step 2: Convert to fraction form
    201,961.56/278,722.97 = 111,333.64/x
  3. Step 3: Cross multiply
    201,961.56x = 278,722.97 × 111,333.64
  4. Step 4: Simplify right side
    201,961.56x = 31,031,242,801.71
  5. Step 5: Solve for x
    x = 31,031,242,801.71/201,961.56
  6. Step 6: Final answer
    x = 153,649.25

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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.