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Finding the Fourth Proportional to 693,673.65, 957,262.39 and 407,138.38

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Solution

The fourth proportional to 693,673.65, 957,262.39 and 407,138.38 is: 561,846.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,673.65 : 957,262.39 = 407,138.38 : x
  2. Step 2: Convert to fraction form
    693,673.65/957,262.39 = 407,138.38/x
  3. Step 3: Cross multiply
    693,673.65x = 957,262.39 × 407,138.38
  4. Step 4: Simplify right side
    693,673.65x = 389,738,255,288.53
  5. Step 5: Solve for x
    x = 389,738,255,288.53/693,673.65
  6. Step 6: Final answer
    x = 561,846.71

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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.