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Finding the Fourth Proportional to 219,131.64, 328,560.74 and 100,650.92

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Solution

The fourth proportional to 219,131.64, 328,560.74 and 100,650.92 is: 150,913.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,131.64 : 328,560.74 = 100,650.92 : x
  2. Step 2: Convert to fraction form
    219,131.64/328,560.74 = 100,650.92/x
  3. Step 3: Cross multiply
    219,131.64x = 328,560.74 × 100,650.92
  4. Step 4: Simplify right side
    219,131.64x = 33,069,940,756.88
  5. Step 5: Solve for x
    x = 33,069,940,756.88/219,131.64
  6. Step 6: Final answer
    x = 150,913.58

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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.