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Finding the Fourth Proportional to 117,021.20, 175,330.20 and 54,563.60

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Solution

The fourth proportional to 117,021.20, 175,330.20 and 54,563.60 is: 81,751.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,021.20 : 175,330.20 = 54,563.60 : x
  2. Step 2: Convert to fraction form
    117,021.20/175,330.20 = 54,563.60/x
  3. Step 3: Cross multiply
    117,021.20x = 175,330.20 × 54,563.60
  4. Step 4: Simplify right side
    117,021.20x = 9,566,646,900.72
  5. Step 5: Solve for x
    x = 9,566,646,900.72/117,021.20
  6. Step 6: Final answer
    x = 81,751.40

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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.