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Finding the Fourth Proportional to 111,969.70, 154,529.09 and 83,626.18

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Solution

The fourth proportional to 111,969.70, 154,529.09 and 83,626.18 is: 115,412.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,969.70 : 154,529.09 = 83,626.18 : x
  2. Step 2: Convert to fraction form
    111,969.70/154,529.09 = 83,626.18/x
  3. Step 3: Cross multiply
    111,969.70x = 154,529.09 × 83,626.18
  4. Step 4: Simplify right side
    111,969.70x = 12,922,677,495.58
  5. Step 5: Solve for x
    x = 12,922,677,495.58/111,969.70
  6. Step 6: Final answer
    x = 115,412.27

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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.