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Finding the Fourth Proportional to 51,994.80, 77,992.20 and 49,807.80

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Solution

The fourth proportional to 51,994.80, 77,992.20 and 49,807.80 is: 74,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,994.80 : 77,992.20 = 49,807.80 : x
  2. Step 2: Convert to fraction form
    51,994.80/77,992.20 = 49,807.80/x
  3. Step 3: Cross multiply
    51,994.80x = 77,992.20 × 49,807.80
  4. Step 4: Simplify right side
    51,994.80x = 3,884,619,899.16
  5. Step 5: Solve for x
    x = 3,884,619,899.16/51,994.80
  6. Step 6: Final answer
    x = 74,711.70

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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.