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Finding the Fourth Proportional to 325,683.57, 488,648.38 and 126,015.94

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Solution

The fourth proportional to 325,683.57, 488,648.38 and 126,015.94 is: 189,071.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,683.57 : 488,648.38 = 126,015.94 : x
  2. Step 2: Convert to fraction form
    325,683.57/488,648.38 = 126,015.94/x
  3. Step 3: Cross multiply
    325,683.57x = 488,648.38 × 126,015.94
  4. Step 4: Simplify right side
    325,683.57x = 61,577,484,935.18
  5. Step 5: Solve for x
    x = 61,577,484,935.18/325,683.57
  6. Step 6: Final answer
    x = 189,071.51

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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.