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Finding the Fourth Proportional to 52,477.46, 78,720.91 and 16,939.62

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Solution

The fourth proportional to 52,477.46, 78,720.91 and 16,939.62 is: 25,410.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,477.46 : 78,720.91 = 16,939.62 : x
  2. Step 2: Convert to fraction form
    52,477.46/78,720.91 = 16,939.62/x
  3. Step 3: Cross multiply
    52,477.46x = 78,720.91 × 16,939.62
  4. Step 4: Simplify right side
    52,477.46x = 1,333,502,104.65
  5. Step 5: Solve for x
    x = 1,333,502,104.65/52,477.46
  6. Step 6: Final answer
    x = 25,410.95

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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.