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Finding the Fourth Proportional to 639,523.28, 882,549.28 and 353,043.52

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Solution

The fourth proportional to 639,523.28, 882,549.28 and 353,043.52 is: 487,204.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,523.28 : 882,549.28 = 353,043.52 : x
  2. Step 2: Convert to fraction form
    639,523.28/882,549.28 = 353,043.52/x
  3. Step 3: Cross multiply
    639,523.28x = 882,549.28 × 353,043.52
  4. Step 4: Simplify right side
    639,523.28x = 311,578,304,384.67
  5. Step 5: Solve for x
    x = 311,578,304,384.67/639,523.28
  6. Step 6: Final answer
    x = 487,204.01

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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.