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Finding the Fourth Proportional to 132,403.67, 182,746.16 and 87,085.79

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Solution

The fourth proportional to 132,403.67, 182,746.16 and 87,085.79 is: 120,197.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,403.67 : 182,746.16 = 87,085.79 : x
  2. Step 2: Convert to fraction form
    132,403.67/182,746.16 = 87,085.79/x
  3. Step 3: Cross multiply
    132,403.67x = 182,746.16 × 87,085.79
  4. Step 4: Simplify right side
    132,403.67x = 15,914,593,713.07
  5. Step 5: Solve for x
    x = 15,914,593,713.07/132,403.67
  6. Step 6: Final answer
    x = 120,197.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.