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Finding the Fourth Proportional to 328,364.20, 492,546.30 and 118,023.40

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Solution

The fourth proportional to 328,364.20, 492,546.30 and 118,023.40 is: 177,035.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,364.20 : 492,546.30 = 118,023.40 : x
  2. Step 2: Convert to fraction form
    328,364.20/492,546.30 = 118,023.40/x
  3. Step 3: Cross multiply
    328,364.20x = 492,546.30 × 118,023.40
  4. Step 4: Simplify right side
    328,364.20x = 58,131,988,983.42
  5. Step 5: Solve for x
    x = 58,131,988,983.42/328,364.20
  6. Step 6: Final answer
    x = 177,035.10

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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.