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Finding the Fourth Proportional to 111,954.77, 154,334.36 and 85,050.57

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Solution

The fourth proportional to 111,954.77, 154,334.36 and 85,050.57 is: 117,245.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,954.77 : 154,334.36 = 85,050.57 : x
  2. Step 2: Convert to fraction form
    111,954.77/154,334.36 = 85,050.57/x
  3. Step 3: Cross multiply
    111,954.77x = 154,334.36 × 85,050.57
  4. Step 4: Simplify right side
    111,954.77x = 13,126,225,288.59
  5. Step 5: Solve for x
    x = 13,126,225,288.59/111,954.77
  6. Step 6: Final answer
    x = 117,245.79

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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.