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Finding the Fourth Proportional to 663,010.40, 994,515.60 and 189,711.20

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Solution

The fourth proportional to 663,010.40, 994,515.60 and 189,711.20 is: 284,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,010.40 : 994,515.60 = 189,711.20 : x
  2. Step 2: Convert to fraction form
    663,010.40/994,515.60 = 189,711.20/x
  3. Step 3: Cross multiply
    663,010.40x = 994,515.60 × 189,711.20
  4. Step 4: Simplify right side
    663,010.40x = 188,670,747,894.72
  5. Step 5: Solve for x
    x = 188,670,747,894.72/663,010.40
  6. Step 6: Final answer
    x = 284,566.80

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Double scale
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Similar ratio
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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.