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Finding the Fourth Proportional to 639,538.94, 882,540.61 and 353,052.88

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Solution

The fourth proportional to 639,538.94, 882,540.61 and 353,052.88 is: 487,200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,538.94 : 882,540.61 = 353,052.88 : x
  2. Step 2: Convert to fraction form
    639,538.94/882,540.61 = 353,052.88/x
  3. Step 3: Cross multiply
    639,538.94x = 882,540.61 × 353,052.88
  4. Step 4: Simplify right side
    639,538.94x = 311,583,502,974.40
  5. Step 5: Solve for x
    x = 311,583,502,974.40/639,538.94
  6. Step 6: Final answer
    x = 487,200.20

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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.