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Finding the Fourth Proportional to 74,074.88, 102,116.88 and 52,817.28

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Solution

The fourth proportional to 74,074.88, 102,116.88 and 52,817.28 is: 72,811.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,074.88 : 102,116.88 = 52,817.28 : x
  2. Step 2: Convert to fraction form
    74,074.88/102,116.88 = 52,817.28/x
  3. Step 3: Cross multiply
    74,074.88x = 102,116.88 × 52,817.28
  4. Step 4: Simplify right side
    74,074.88x = 5,393,535,843.69
  5. Step 5: Solve for x
    x = 5,393,535,843.69/74,074.88
  6. Step 6: Final answer
    x = 72,811.94

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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.