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Finding the Fourth Proportional to 554,834.96, 765,672.56 and 385,167.50

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Solution

The fourth proportional to 554,834.96, 765,672.56 and 385,167.50 is: 531,531.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,834.96 : 765,672.56 = 385,167.50 : x
  2. Step 2: Convert to fraction form
    554,834.96/765,672.56 = 385,167.50/x
  3. Step 3: Cross multiply
    554,834.96x = 765,672.56 × 385,167.50
  4. Step 4: Simplify right side
    554,834.96x = 294,912,185,753.80
  5. Step 5: Solve for x
    x = 294,912,185,753.80/554,834.96
  6. Step 6: Final answer
    x = 531,531.37

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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.