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Finding the Fourth Proportional to 77,917.28, 116,841.28 and 48,333.92

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Solution

The fourth proportional to 77,917.28, 116,841.28 and 48,333.92 is: 72,479.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,917.28 : 116,841.28 = 48,333.92 : x
  2. Step 2: Convert to fraction form
    77,917.28/116,841.28 = 48,333.92/x
  3. Step 3: Cross multiply
    77,917.28x = 116,841.28 × 48,333.92
  4. Step 4: Simplify right side
    77,917.28x = 5,647,397,080.22
  5. Step 5: Solve for x
    x = 5,647,397,080.22/77,917.28
  6. Step 6: Final answer
    x = 72,479.39

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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.