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Finding the Fourth Proportional to 339,486.80, 509,230.20 and 192,030.80

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Solution

The fourth proportional to 339,486.80, 509,230.20 and 192,030.80 is: 288,046.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,486.80 : 509,230.20 = 192,030.80 : x
  2. Step 2: Convert to fraction form
    339,486.80/509,230.20 = 192,030.80/x
  3. Step 3: Cross multiply
    339,486.80x = 509,230.20 × 192,030.80
  4. Step 4: Simplify right side
    339,486.80x = 97,787,882,690.16
  5. Step 5: Solve for x
    x = 97,787,882,690.16/339,486.80
  6. Step 6: Final answer
    x = 288,046.20

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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.