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Finding the Fourth Proportional to 529,570.40, 793,043.40 and 339,738.80

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Solution

The fourth proportional to 529,570.40, 793,043.40 and 339,738.80 is: 508,766.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,570.40 : 793,043.40 = 339,738.80 : x
  2. Step 2: Convert to fraction form
    529,570.40/793,043.40 = 339,738.80/x
  3. Step 3: Cross multiply
    529,570.40x = 793,043.40 × 339,738.80
  4. Step 4: Simplify right side
    529,570.40x = 269,427,613,063.92
  5. Step 5: Solve for x
    x = 269,427,613,063.92/529,570.40
  6. Step 6: Final answer
    x = 508,766.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.