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Finding the Fourth Proportional to 678,693.67, 936,608.51 and 372,798.33

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Solution

The fourth proportional to 678,693.67, 936,608.51 and 372,798.33 is: 514,467.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,693.67 : 936,608.51 = 372,798.33 : x
  2. Step 2: Convert to fraction form
    678,693.67/936,608.51 = 372,798.33/x
  3. Step 3: Cross multiply
    678,693.67x = 936,608.51 × 372,798.33
  4. Step 4: Simplify right side
    678,693.67x = 349,166,088,391.79
  5. Step 5: Solve for x
    x = 349,166,088,391.79/678,693.67
  6. Step 6: Final answer
    x = 514,467.87

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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.