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Finding the Fourth Proportional to 325,697.36, 488,575.20 and 89,041.28

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Solution

The fourth proportional to 325,697.36, 488,575.20 and 89,041.28 is: 133,569.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,697.36 : 488,575.20 = 89,041.28 : x
  2. Step 2: Convert to fraction form
    325,697.36/488,575.20 = 89,041.28/x
  3. Step 3: Cross multiply
    325,697.36x = 488,575.20 × 89,041.28
  4. Step 4: Simplify right side
    325,697.36x = 43,503,361,184.26
  5. Step 5: Solve for x
    x = 43,503,361,184.26/325,697.36
  6. Step 6: Final answer
    x = 133,569.89

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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.