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Finding the Fourth Proportional to 201,649.64, 278,266.96 and 111,003.76

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Solution

The fourth proportional to 201,649.64, 278,266.96 and 111,003.76 is: 153,179.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,649.64 : 278,266.96 = 111,003.76 : x
  2. Step 2: Convert to fraction form
    201,649.64/278,266.96 = 111,003.76/x
  3. Step 3: Cross multiply
    201,649.64x = 278,266.96 × 111,003.76
  4. Step 4: Simplify right side
    201,649.64x = 30,888,678,843.77
  5. Step 5: Solve for x
    x = 30,888,678,843.77/201,649.64
  6. Step 6: Final answer
    x = 153,179.94

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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.