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Finding the Fourth Proportional to 61,450.78, 92,190.75 and 19,897.78

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Solution

The fourth proportional to 61,450.78, 92,190.75 and 19,897.78 is: 29,851.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,450.78 : 92,190.75 = 19,897.78 : x
  2. Step 2: Convert to fraction form
    61,450.78/92,190.75 = 19,897.78/x
  3. Step 3: Cross multiply
    61,450.78x = 92,190.75 × 19,897.78
  4. Step 4: Simplify right side
    61,450.78x = 1,834,391,261.54
  5. Step 5: Solve for x
    x = 1,834,391,261.54/61,450.78
  6. Step 6: Final answer
    x = 29,851.39

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1.5x scale

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.