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Finding the Fourth Proportional to 624,471.69, 861,791.80 and 382,707.55

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Solution

The fourth proportional to 624,471.69, 861,791.80 and 382,707.55 is: 528,149.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,471.69 : 861,791.80 = 382,707.55 : x
  2. Step 2: Convert to fraction form
    624,471.69/861,791.80 = 382,707.55/x
  3. Step 3: Cross multiply
    624,471.69x = 861,791.80 × 382,707.55
  4. Step 4: Simplify right side
    624,471.69x = 329,814,228,388.09
  5. Step 5: Solve for x
    x = 329,814,228,388.09/624,471.69
  6. Step 6: Final answer
    x = 528,149.21

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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.