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Finding the Fourth Proportional to 94,691.63, 130,686.92 and 65,992.73

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Solution

The fourth proportional to 94,691.63, 130,686.92 and 65,992.73 is: 91,078.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,691.63 : 130,686.92 = 65,992.73 : x
  2. Step 2: Convert to fraction form
    94,691.63/130,686.92 = 65,992.73/x
  3. Step 3: Cross multiply
    94,691.63x = 130,686.92 × 65,992.73
  4. Step 4: Simplify right side
    94,691.63x = 8,624,385,890.17
  5. Step 5: Solve for x
    x = 8,624,385,890.17/94,691.63
  6. Step 6: Final answer
    x = 91,078.65

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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.