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Finding the Fourth Proportional to 264,928.20, 397,392.30 and 115,337.40

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Solution

The fourth proportional to 264,928.20, 397,392.30 and 115,337.40 is: 173,006.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,928.20 : 397,392.30 = 115,337.40 : x
  2. Step 2: Convert to fraction form
    264,928.20/397,392.30 = 115,337.40/x
  3. Step 3: Cross multiply
    264,928.20x = 397,392.30 × 115,337.40
  4. Step 4: Simplify right side
    264,928.20x = 45,834,194,662.02
  5. Step 5: Solve for x
    x = 45,834,194,662.02/264,928.20
  6. Step 6: Final answer
    x = 173,006.10

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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.