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Finding the Fourth Proportional to 639,598.42, 882,647.13 and 353,119.06

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Solution

The fourth proportional to 639,598.42, 882,647.13 and 353,119.06 is: 487,305.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,598.42 : 882,647.13 = 353,119.06 : x
  2. Step 2: Convert to fraction form
    639,598.42/882,647.13 = 353,119.06/x
  3. Step 3: Cross multiply
    639,598.42x = 882,647.13 × 353,119.06
  4. Step 4: Simplify right side
    639,598.42x = 311,679,524,857.30
  5. Step 5: Solve for x
    x = 311,679,524,857.30/639,598.42
  6. Step 6: Final answer
    x = 487,305.03

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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.