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Finding the Fourth Proportional to 194,686.80, 291,868.20 and 82,453.20

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Solution

The fourth proportional to 194,686.80, 291,868.20 and 82,453.20 is: 123,611.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,686.80 : 291,868.20 = 82,453.20 : x
  2. Step 2: Convert to fraction form
    194,686.80/291,868.20 = 82,453.20/x
  3. Step 3: Cross multiply
    194,686.80x = 291,868.20 × 82,453.20
  4. Step 4: Simplify right side
    194,686.80x = 24,065,467,068.24
  5. Step 5: Solve for x
    x = 24,065,467,068.24/194,686.80
  6. Step 6: Final answer
    x = 123,611.19

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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.