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Finding the Fourth Proportional to 180,235.28, 248,722.09 and 99,661.03

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Solution

The fourth proportional to 180,235.28, 248,722.09 and 99,661.03 is: 137,530.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,235.28 : 248,722.09 = 99,661.03 : x
  2. Step 2: Convert to fraction form
    180,235.28/248,722.09 = 99,661.03/x
  3. Step 3: Cross multiply
    180,235.28x = 248,722.09 × 99,661.03
  4. Step 4: Simplify right side
    180,235.28x = 24,787,899,673.15
  5. Step 5: Solve for x
    x = 24,787,899,673.15/180,235.28
  6. Step 6: Final answer
    x = 137,530.79

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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.