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Finding the Fourth Proportional to 117,312.80, 175,969.20 and 115,563.20

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Solution

The fourth proportional to 117,312.80, 175,969.20 and 115,563.20 is: 173,344.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,312.80 : 175,969.20 = 115,563.20 : x
  2. Step 2: Convert to fraction form
    117,312.80/175,969.20 = 115,563.20/x
  3. Step 3: Cross multiply
    117,312.80x = 175,969.20 × 115,563.20
  4. Step 4: Simplify right side
    117,312.80x = 20,335,563,853.44
  5. Step 5: Solve for x
    x = 20,335,563,853.44/117,312.80
  6. Step 6: Final answer
    x = 173,344.80

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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.