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Finding the Fourth Proportional to 111,993.85, 154,551.72 and 66,673.40

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Solution

The fourth proportional to 111,993.85, 154,551.72 and 66,673.40 is: 92,009.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,993.85 : 154,551.72 = 66,673.40 : x
  2. Step 2: Convert to fraction form
    111,993.85/154,551.72 = 66,673.40/x
  3. Step 3: Cross multiply
    111,993.85x = 154,551.72 × 66,673.40
  4. Step 4: Simplify right side
    111,993.85x = 10,304,488,648.25
  5. Step 5: Solve for x
    x = 10,304,488,648.25/111,993.85
  6. Step 6: Final answer
    x = 92,009.42

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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.