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Finding the Fourth Proportional to 674,112.48, 930,269.52 and 372,300

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Solution

The fourth proportional to 674,112.48, 930,269.52 and 372,300 is: 513,770.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,112.48 : 930,269.52 = 372,300 : x
  2. Step 2: Convert to fraction form
    674,112.48/930,269.52 = 372,300/x
  3. Step 3: Cross multiply
    674,112.48x = 930,269.52 × 372,300
  4. Step 4: Simplify right side
    674,112.48x = 346,339,342,296
  5. Step 5: Solve for x
    x = 346,339,342,296/674,112.48
  6. Step 6: Final answer
    x = 513,770.85

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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.