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Finding the Fourth Proportional to 111,826.99, 154,195.27 and 81,558.91

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Solution

The fourth proportional to 111,826.99, 154,195.27 and 81,558.91 is: 112,459.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,826.99 : 154,195.27 = 81,558.91 : x
  2. Step 2: Convert to fraction form
    111,826.99/154,195.27 = 81,558.91/x
  3. Step 3: Cross multiply
    111,826.99x = 154,195.27 × 81,558.91
  4. Step 4: Simplify right side
    111,826.99x = 12,575,998,148.36
  5. Step 5: Solve for x
    x = 12,575,998,148.36/111,826.99
  6. Step 6: Final answer
    x = 112,459.42

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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.