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Finding the Fourth Proportional to 111,903.77, 154,430.08 and 68,867.26

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Solution

The fourth proportional to 111,903.77, 154,430.08 and 68,867.26 is: 95,038.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,903.77 : 154,430.08 = 68,867.26 : x
  2. Step 2: Convert to fraction form
    111,903.77/154,430.08 = 68,867.26/x
  3. Step 3: Cross multiply
    111,903.77x = 154,430.08 × 68,867.26
  4. Step 4: Simplify right side
    111,903.77x = 10,635,175,912.94
  5. Step 5: Solve for x
    x = 10,635,175,912.94/111,903.77
  6. Step 6: Final answer
    x = 95,038.58

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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.