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Finding the Fourth Proportional to 325,711.19, 488,509.32 and 125,867.28

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Solution

The fourth proportional to 325,711.19, 488,509.32 and 125,867.28 is: 188,778.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,711.19 : 488,509.32 = 125,867.28 : x
  2. Step 2: Convert to fraction form
    325,711.19/488,509.32 = 125,867.28/x
  3. Step 3: Cross multiply
    325,711.19x = 488,509.32 × 125,867.28
  4. Step 4: Simplify right side
    325,711.19x = 61,487,339,363.05
  5. Step 5: Solve for x
    x = 61,487,339,363.05/325,711.19
  6. Step 6: Final answer
    x = 188,778.72

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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.