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Finding the Fourth Proportional to 117,621.51, 176,429.52 and 28,874.87

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Solution

The fourth proportional to 117,621.51, 176,429.52 and 28,874.87 is: 43,311.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,621.51 : 176,429.52 = 28,874.87 : x
  2. Step 2: Convert to fraction form
    117,621.51/176,429.52 = 28,874.87/x
  3. Step 3: Cross multiply
    117,621.51x = 176,429.52 × 28,874.87
  4. Step 4: Simplify right side
    117,621.51x = 5,094,379,454.16
  5. Step 5: Solve for x
    x = 5,094,379,454.16/117,621.51
  6. Step 6: Final answer
    x = 43,311.63

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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.