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Finding the Fourth Proportional to 303,574.46, 455,352.44 and 78,929.94

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Solution

The fourth proportional to 303,574.46, 455,352.44 and 78,929.94 is: 118,392.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,574.46 : 455,352.44 = 78,929.94 : x
  2. Step 2: Convert to fraction form
    303,574.46/455,352.44 = 78,929.94/x
  3. Step 3: Cross multiply
    303,574.46x = 455,352.44 × 78,929.94
  4. Step 4: Simplify right side
    303,574.46x = 35,940,940,768.05
  5. Step 5: Solve for x
    x = 35,940,940,768.05/303,574.46
  6. Step 6: Final answer
    x = 118,392.50

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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.