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Finding the Fourth Proportional to 325,390.90, 488,072.07 and 88,732.79

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Solution

The fourth proportional to 325,390.90, 488,072.07 and 88,732.79 is: 133,095.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,390.90 : 488,072.07 = 88,732.79 : x
  2. Step 2: Convert to fraction form
    325,390.90/488,072.07 = 88,732.79/x
  3. Step 3: Cross multiply
    325,390.90x = 488,072.07 × 88,732.79
  4. Step 4: Simplify right side
    325,390.90x = 43,307,996,769.52
  5. Step 5: Solve for x
    x = 43,307,996,769.52/325,390.90
  6. Step 6: Final answer
    x = 133,095.29

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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.