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Finding the Fourth Proportional to 71,806.96, 99,105.44 and 54,779.05

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Solution

The fourth proportional to 71,806.96, 99,105.44 and 54,779.05 is: 75,604.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,806.96 : 99,105.44 = 54,779.05 : x
  2. Step 2: Convert to fraction form
    71,806.96/99,105.44 = 54,779.05/x
  3. Step 3: Cross multiply
    71,806.96x = 99,105.44 × 54,779.05
  4. Step 4: Simplify right side
    71,806.96x = 5,428,901,331.37
  5. Step 5: Solve for x
    x = 5,428,901,331.37/71,806.96
  6. Step 6: Final answer
    x = 75,604.11

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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.