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Finding the Fourth Proportional to 78,907.91, 118,382.21 and 22,752.43

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Solution

The fourth proportional to 78,907.91, 118,382.21 and 22,752.43 is: 34,134.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,907.91 : 118,382.21 = 22,752.43 : x
  2. Step 2: Convert to fraction form
    78,907.91/118,382.21 = 22,752.43/x
  3. Step 3: Cross multiply
    78,907.91x = 118,382.21 × 22,752.43
  4. Step 4: Simplify right side
    78,907.91x = 2,693,482,621.87
  5. Step 5: Solve for x
    x = 2,693,482,621.87/78,907.91
  6. Step 6: Final answer
    x = 34,134.51

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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.