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Finding the Fourth Proportional to 111,806.94, 154,297.70 and 64,069.52

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Solution

The fourth proportional to 111,806.94, 154,297.70 and 64,069.52 is: 88,418.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,806.94 : 154,297.70 = 64,069.52 : x
  2. Step 2: Convert to fraction form
    111,806.94/154,297.70 = 64,069.52/x
  3. Step 3: Cross multiply
    111,806.94x = 154,297.70 × 64,069.52
  4. Step 4: Simplify right side
    111,806.94x = 9,885,778,484.27
  5. Step 5: Solve for x
    x = 9,885,778,484.27/111,806.94
  6. Step 6: Final answer
    x = 88,418.29

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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.