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Finding the Fourth Proportional to 113,855.20, 170,782.80 and 61,367.20

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Solution

The fourth proportional to 113,855.20, 170,782.80 and 61,367.20 is: 92,050.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,855.20 : 170,782.80 = 61,367.20 : x
  2. Step 2: Convert to fraction form
    113,855.20/170,782.80 = 61,367.20/x
  3. Step 3: Cross multiply
    113,855.20x = 170,782.80 × 61,367.20
  4. Step 4: Simplify right side
    113,855.20x = 10,480,462,244.16
  5. Step 5: Solve for x
    x = 10,480,462,244.16/113,855.20
  6. Step 6: Final answer
    x = 92,050.80

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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.