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Finding the Fourth Proportional to 111,846.89, 154,405.85 and 86,295.85

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Solution

The fourth proportional to 111,846.89, 154,405.85 and 86,295.85 is: 119,132.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,846.89 : 154,405.85 = 86,295.85 : x
  2. Step 2: Convert to fraction form
    111,846.89/154,405.85 = 86,295.85/x
  3. Step 3: Cross multiply
    111,846.89x = 154,405.85 × 86,295.85
  4. Step 4: Simplify right side
    111,846.89x = 13,324,583,253.23
  5. Step 5: Solve for x
    x = 13,324,583,253.23/111,846.89
  6. Step 6: Final answer
    x = 119,132.35

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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.