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Finding the Fourth Proportional to 207,900.48, 311,855.58 and 67,670.04

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Solution

The fourth proportional to 207,900.48, 311,855.58 and 67,670.04 is: 101,506.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,900.48 : 311,855.58 = 67,670.04 : x
  2. Step 2: Convert to fraction form
    207,900.48/311,855.58 = 67,670.04/x
  3. Step 3: Cross multiply
    207,900.48x = 311,855.58 × 67,670.04
  4. Step 4: Simplify right side
    207,900.48x = 21,103,279,572.82
  5. Step 5: Solve for x
    x = 21,103,279,572.82/207,900.48
  6. Step 6: Final answer
    x = 101,506.64

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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.