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Finding the Fourth Proportional to 325,470.15, 488,520.45 and 157,108.68

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Solution

The fourth proportional to 325,470.15, 488,520.45 and 157,108.68 is: 235,815.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,470.15 : 488,520.45 = 157,108.68 : x
  2. Step 2: Convert to fraction form
    325,470.15/488,520.45 = 157,108.68/x
  3. Step 3: Cross multiply
    325,470.15x = 488,520.45 × 157,108.68
  4. Step 4: Simplify right side
    325,470.15x = 76,750,803,052.51
  5. Step 5: Solve for x
    x = 76,750,803,052.51/325,470.15
  6. Step 6: Final answer
    x = 235,815.18

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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.