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Finding the Fourth Proportional to 217,064.60, 325,208.10 and 185,960.60

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Solution

The fourth proportional to 217,064.60, 325,208.10 and 185,960.60 is: 278,607.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,064.60 : 325,208.10 = 185,960.60 : x
  2. Step 2: Convert to fraction form
    217,064.60/325,208.10 = 185,960.60/x
  3. Step 3: Cross multiply
    217,064.60x = 325,208.10 × 185,960.60
  4. Step 4: Simplify right side
    217,064.60x = 60,475,893,400.86
  5. Step 5: Solve for x
    x = 60,475,893,400.86/217,064.60
  6. Step 6: Final answer
    x = 278,607.81

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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.