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Finding the Fourth Proportional to 145,758.97, 201,149.94 and 82,099.03

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Solution

The fourth proportional to 145,758.97, 201,149.94 and 82,099.03 is: 113,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,758.97 : 201,149.94 = 82,099.03 : x
  2. Step 2: Convert to fraction form
    145,758.97/201,149.94 = 82,099.03/x
  3. Step 3: Cross multiply
    145,758.97x = 201,149.94 × 82,099.03
  4. Step 4: Simplify right side
    145,758.97x = 16,514,214,958.56
  5. Step 5: Solve for x
    x = 16,514,214,958.56/145,758.97
  6. Step 6: Final answer
    x = 113,298.10

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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.