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Finding the Fourth Proportional to 331,247.40, 496,871.10 and 322,031.40

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Solution

The fourth proportional to 331,247.40, 496,871.10 and 322,031.40 is: 483,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,247.40 : 496,871.10 = 322,031.40 : x
  2. Step 2: Convert to fraction form
    331,247.40/496,871.10 = 322,031.40/x
  3. Step 3: Cross multiply
    331,247.40x = 496,871.10 × 322,031.40
  4. Step 4: Simplify right side
    331,247.40x = 160,008,095,952.54
  5. Step 5: Solve for x
    x = 160,008,095,952.54/331,247.40
  6. Step 6: Final answer
    x = 483,047.10

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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.