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Finding the Fourth Proportional to 321,785.37, 444,128.49 and 185,841.45

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Solution

The fourth proportional to 321,785.37, 444,128.49 and 185,841.45 is: 256,498.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,785.37 : 444,128.49 = 185,841.45 : x
  2. Step 2: Convert to fraction form
    321,785.37/444,128.49 = 185,841.45/x
  3. Step 3: Cross multiply
    321,785.37x = 444,128.49 × 185,841.45
  4. Step 4: Simplify right side
    321,785.37x = 82,537,482,567.91
  5. Step 5: Solve for x
    x = 82,537,482,567.91/321,785.37
  6. Step 6: Final answer
    x = 256,498.56

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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.