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Finding the Fourth Proportional to 364,563.40, 547,881.90 and 318,944.20

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Solution

The fourth proportional to 364,563.40, 547,881.90 and 318,944.20 is: 479,323.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,563.40 : 547,881.90 = 318,944.20 : x
  2. Step 2: Convert to fraction form
    364,563.40/547,881.90 = 318,944.20/x
  3. Step 3: Cross multiply
    364,563.40x = 547,881.90 × 318,944.20
  4. Step 4: Simplify right side
    364,563.40x = 174,743,754,289.98
  5. Step 5: Solve for x
    x = 174,743,754,289.98/364,563.40
  6. Step 6: Final answer
    x = 479,323.36

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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.