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Finding the Fourth Proportional to 325,291.42, 488,103.91 and 156,955.30

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Solution

The fourth proportional to 325,291.42, 488,103.91 and 156,955.30 is: 235,513.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,291.42 : 488,103.91 = 156,955.30 : x
  2. Step 2: Convert to fraction form
    325,291.42/488,103.91 = 156,955.30/x
  3. Step 3: Cross multiply
    325,291.42x = 488,103.91 × 156,955.30
  4. Step 4: Simplify right side
    325,291.42x = 76,610,494,012.58
  5. Step 5: Solve for x
    x = 76,610,494,012.58/325,291.42
  6. Step 6: Final answer
    x = 235,513.42

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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.