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Finding the Fourth Proportional to 61,786.94, 92,647.20 and 19,655.60

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Solution

The fourth proportional to 61,786.94, 92,647.20 and 19,655.60 is: 29,472.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,786.94 : 92,647.20 = 19,655.60 : x
  2. Step 2: Convert to fraction form
    61,786.94/92,647.20 = 19,655.60/x
  3. Step 3: Cross multiply
    61,786.94x = 92,647.20 × 19,655.60
  4. Step 4: Simplify right side
    61,786.94x = 1,821,036,304.32
  5. Step 5: Solve for x
    x = 1,821,036,304.32/61,786.94
  6. Step 6: Final answer
    x = 29,472.84

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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.