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Finding the Fourth Proportional to 113,880.80, 170,821.20 and 51,551.30

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Solution

The fourth proportional to 113,880.80, 170,821.20 and 51,551.30 is: 77,326.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,880.80 : 170,821.20 = 51,551.30 : x
  2. Step 2: Convert to fraction form
    113,880.80/170,821.20 = 51,551.30/x
  3. Step 3: Cross multiply
    113,880.80x = 170,821.20 × 51,551.30
  4. Step 4: Simplify right side
    113,880.80x = 8,806,054,927.56
  5. Step 5: Solve for x
    x = 8,806,054,927.56/113,880.80
  6. Step 6: Final answer
    x = 77,326.95

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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.