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Finding the Fourth Proportional to 62,087.58, 85,644.54 and 45,072

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Solution

The fourth proportional to 62,087.58, 85,644.54 and 45,072 is: 62,172.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,087.58 : 85,644.54 = 45,072 : x
  2. Step 2: Convert to fraction form
    62,087.58/85,644.54 = 45,072/x
  3. Step 3: Cross multiply
    62,087.58x = 85,644.54 × 45,072
  4. Step 4: Simplify right side
    62,087.58x = 3,860,170,706.88
  5. Step 5: Solve for x
    x = 3,860,170,706.88/62,087.58
  6. Step 6: Final answer
    x = 62,172.99

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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.