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Finding the Fourth Proportional to 512,881.30, 707,790.33 and 283,453.45

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Solution

The fourth proportional to 512,881.30, 707,790.33 and 283,453.45 is: 391,173.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,881.30 : 707,790.33 = 283,453.45 : x
  2. Step 2: Convert to fraction form
    512,881.30/707,790.33 = 283,453.45/x
  3. Step 3: Cross multiply
    512,881.30x = 707,790.33 × 283,453.45
  4. Step 4: Simplify right side
    512,881.30x = 200,625,610,915.14
  5. Step 5: Solve for x
    x = 200,625,610,915.14/512,881.30
  6. Step 6: Final answer
    x = 391,173.57

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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.