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Finding the Fourth Proportional to 89,013, 122,851.68 and 50,772.63

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Solution

The fourth proportional to 89,013, 122,851.68 and 50,772.63 is: 70,074.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,013 : 122,851.68 = 50,772.63 : x
  2. Step 2: Convert to fraction form
    89,013/122,851.68 = 50,772.63/x
  3. Step 3: Cross multiply
    89,013x = 122,851.68 × 50,772.63
  4. Step 4: Simplify right side
    89,013x = 6,237,502,893.52
  5. Step 5: Solve for x
    x = 6,237,502,893.52/89,013
  6. Step 6: Final answer
    x = 70,074.07

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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.