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Finding the Fourth Proportional to 99,644.99, 137,506.87 and 54,322.25

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Solution

The fourth proportional to 99,644.99, 137,506.87 and 54,322.25 is: 74,962.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,644.99 : 137,506.87 = 54,322.25 : x
  2. Step 2: Convert to fraction form
    99,644.99/137,506.87 = 54,322.25/x
  3. Step 3: Cross multiply
    99,644.99x = 137,506.87 × 54,322.25
  4. Step 4: Simplify right side
    99,644.99x = 7,469,682,568.86
  5. Step 5: Solve for x
    x = 7,469,682,568.86/99,644.99
  6. Step 6: Final answer
    x = 74,962.95

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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.