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Finding the Fourth Proportional to 61,653.80, 92,480.70 and 55,092.80

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Solution

The fourth proportional to 61,653.80, 92,480.70 and 55,092.80 is: 82,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,653.80 : 92,480.70 = 55,092.80 : x
  2. Step 2: Convert to fraction form
    61,653.80/92,480.70 = 55,092.80/x
  3. Step 3: Cross multiply
    61,653.80x = 92,480.70 × 55,092.80
  4. Step 4: Simplify right side
    61,653.80x = 5,095,020,708.96
  5. Step 5: Solve for x
    x = 5,095,020,708.96/61,653.80
  6. Step 6: Final answer
    x = 82,639.20

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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.