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Finding the Fourth Proportional to 663,039.60, 993,388.20 and 641,113.20

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Solution

The fourth proportional to 663,039.60, 993,388.20 and 641,113.20 is: 960,537.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,039.60 : 993,388.20 = 641,113.20 : x
  2. Step 2: Convert to fraction form
    663,039.60/993,388.20 = 641,113.20/x
  3. Step 3: Cross multiply
    663,039.60x = 993,388.20 × 641,113.20
  4. Step 4: Simplify right side
    663,039.60x = 636,874,287,744.24
  5. Step 5: Solve for x
    x = 636,874,287,744.24/663,039.60
  6. Step 6: Final answer
    x = 960,537.33

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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.