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Finding the Fourth Proportional to 111,573.90, 153,920.37 and 66,226.05

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Solution

The fourth proportional to 111,573.90, 153,920.37 and 66,226.05 is: 91,361.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,573.90 : 153,920.37 = 66,226.05 : x
  2. Step 2: Convert to fraction form
    111,573.90/153,920.37 = 66,226.05/x
  3. Step 3: Cross multiply
    111,573.90x = 153,920.37 × 66,226.05
  4. Step 4: Simplify right side
    111,573.90x = 10,193,538,119.64
  5. Step 5: Solve for x
    x = 10,193,538,119.64/111,573.90
  6. Step 6: Final answer
    x = 91,361.31

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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.