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Finding the Fourth Proportional to 132,056.80, 198,085.20 and 43,313.20

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Solution

The fourth proportional to 132,056.80, 198,085.20 and 43,313.20 is: 64,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,056.80 : 198,085.20 = 43,313.20 : x
  2. Step 2: Convert to fraction form
    132,056.80/198,085.20 = 43,313.20/x
  3. Step 3: Cross multiply
    132,056.80x = 198,085.20 × 43,313.20
  4. Step 4: Simplify right side
    132,056.80x = 8,579,703,884.64
  5. Step 5: Solve for x
    x = 8,579,703,884.64/132,056.80
  6. Step 6: Final answer
    x = 64,969.80

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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.