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Finding the Fourth Proportional to 84,327.99, 126,491.98 and 34,431.58

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Solution

The fourth proportional to 84,327.99, 126,491.98 and 34,431.58 is: 51,647.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,327.99 : 126,491.98 = 34,431.58 : x
  2. Step 2: Convert to fraction form
    84,327.99/126,491.98 = 34,431.58/x
  3. Step 3: Cross multiply
    84,327.99x = 126,491.98 × 34,431.58
  4. Step 4: Simplify right side
    84,327.99x = 4,355,318,865.32
  5. Step 5: Solve for x
    x = 4,355,318,865.32/84,327.99
  6. Step 6: Final answer
    x = 51,647.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.