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Finding the Fourth Proportional to 111,763.36, 154,206.36 and 70,912.57

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Solution

The fourth proportional to 111,763.36, 154,206.36 and 70,912.57 is: 97,842.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,763.36 : 154,206.36 = 70,912.57 : x
  2. Step 2: Convert to fraction form
    111,763.36/154,206.36 = 70,912.57/x
  3. Step 3: Cross multiply
    111,763.36x = 154,206.36 × 70,912.57
  4. Step 4: Simplify right side
    111,763.36x = 10,935,169,297.95
  5. Step 5: Solve for x
    x = 10,935,169,297.95/111,763.36
  6. Step 6: Final answer
    x = 97,842.17

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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.