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Finding the Fourth Proportional to 132,062.31, 198,112.32 and 43,322.76

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Solution

The fourth proportional to 132,062.31, 198,112.32 and 43,322.76 is: 64,990.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,062.31 : 198,112.32 = 43,322.76 : x
  2. Step 2: Convert to fraction form
    132,062.31/198,112.32 = 43,322.76/x
  3. Step 3: Cross multiply
    132,062.31x = 198,112.32 × 43,322.76
  4. Step 4: Simplify right side
    132,062.31x = 8,582,772,492.40
  5. Step 5: Solve for x
    x = 8,582,772,492.40/132,062.31
  6. Step 6: Final answer
    x = 64,990.33

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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.