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Finding the Fourth Proportional to 683,688.65, 943,486.73 and 377,786.12

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Solution

The fourth proportional to 683,688.65, 943,486.73 and 377,786.12 is: 521,342.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,688.65 : 943,486.73 = 377,786.12 : x
  2. Step 2: Convert to fraction form
    683,688.65/943,486.73 = 377,786.12/x
  3. Step 3: Cross multiply
    683,688.65x = 943,486.73 × 377,786.12
  4. Step 4: Simplify right side
    683,688.65x = 356,436,191,467.97
  5. Step 5: Solve for x
    x = 356,436,191,467.97/683,688.65
  6. Step 6: Final answer
    x = 521,342.86

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.