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Finding the Fourth Proportional to 77,953.20, 116,929.72 and 28,033.44

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Solution

The fourth proportional to 77,953.20, 116,929.72 and 28,033.44 is: 42,050.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,953.20 : 116,929.72 = 28,033.44 : x
  2. Step 2: Convert to fraction form
    77,953.20/116,929.72 = 28,033.44/x
  3. Step 3: Cross multiply
    77,953.20x = 116,929.72 × 28,033.44
  4. Step 4: Simplify right side
    77,953.20x = 3,277,942,289.84
  5. Step 5: Solve for x
    x = 3,277,942,289.84/77,953.20
  6. Step 6: Final answer
    x = 42,050.13

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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.