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Finding the Fourth Proportional to 364,694.32, 547,285.77 and 128,037.70

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Solution

The fourth proportional to 364,694.32, 547,285.77 and 128,037.70 is: 192,142.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,694.32 : 547,285.77 = 128,037.70 : x
  2. Step 2: Convert to fraction form
    364,694.32/547,285.77 = 128,037.70/x
  3. Step 3: Cross multiply
    364,694.32x = 547,285.77 × 128,037.70
  4. Step 4: Simplify right side
    364,694.32x = 70,073,211,233.53
  5. Step 5: Solve for x
    x = 70,073,211,233.53/364,694.32
  6. Step 6: Final answer
    x = 192,142.32

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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.