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Finding the Fourth Proportional to 398,404.20, 597,606.30 and 264,851.40

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Solution

The fourth proportional to 398,404.20, 597,606.30 and 264,851.40 is: 397,277.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,404.20 : 597,606.30 = 264,851.40 : x
  2. Step 2: Convert to fraction form
    398,404.20/597,606.30 = 264,851.40/x
  3. Step 3: Cross multiply
    398,404.20x = 597,606.30 × 264,851.40
  4. Step 4: Simplify right side
    398,404.20x = 158,276,865,203.82
  5. Step 5: Solve for x
    x = 158,276,865,203.82/398,404.20
  6. Step 6: Final answer
    x = 397,277.10

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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.