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Finding the Fourth Proportional to 328,504.80, 492,757.20 and 118,115.40

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Solution

The fourth proportional to 328,504.80, 492,757.20 and 118,115.40 is: 177,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,504.80 : 492,757.20 = 118,115.40 : x
  2. Step 2: Convert to fraction form
    328,504.80/492,757.20 = 118,115.40/x
  3. Step 3: Cross multiply
    328,504.80x = 492,757.20 × 118,115.40
  4. Step 4: Simplify right side
    328,504.80x = 58,202,213,780.88
  5. Step 5: Solve for x
    x = 58,202,213,780.88/328,504.80
  6. Step 6: Final answer
    x = 177,173.10

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1.5x scale

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.