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Finding the Fourth Proportional to 707,923.25, 976,861.25 and 397,776.57

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Solution

The fourth proportional to 707,923.25, 976,861.25 and 397,776.57 is: 548,890.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,923.25 : 976,861.25 = 397,776.57 : x
  2. Step 2: Convert to fraction form
    707,923.25/976,861.25 = 397,776.57/x
  3. Step 3: Cross multiply
    707,923.25x = 976,861.25 × 397,776.57
  4. Step 4: Simplify right side
    707,923.25x = 388,572,515,402.03
  5. Step 5: Solve for x
    x = 388,572,515,402.03/707,923.25
  6. Step 6: Final answer
    x = 548,890.74

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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.