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Finding the Fourth Proportional to 216,691.92, 325,166.76 and 98,361.72

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Solution

The fourth proportional to 216,691.92, 325,166.76 and 98,361.72 is: 147,601.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,691.92 : 325,166.76 = 98,361.72 : x
  2. Step 2: Convert to fraction form
    216,691.92/325,166.76 = 98,361.72/x
  3. Step 3: Cross multiply
    216,691.92x = 325,166.76 × 98,361.72
  4. Step 4: Simplify right side
    216,691.92x = 31,983,961,800.43
  5. Step 5: Solve for x
    x = 31,983,961,800.43/216,691.92
  6. Step 6: Final answer
    x = 147,601.08

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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.