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Finding the Fourth Proportional to 325,634.92, 488,507.80 and 112,345

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Solution

The fourth proportional to 325,634.92, 488,507.80 and 112,345 is: 168,536.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,634.92 : 488,507.80 = 112,345 : x
  2. Step 2: Convert to fraction form
    325,634.92/488,507.80 = 112,345/x
  3. Step 3: Cross multiply
    325,634.92x = 488,507.80 × 112,345
  4. Step 4: Simplify right side
    325,634.92x = 54,881,408,791
  5. Step 5: Solve for x
    x = 54,881,408,791/325,634.92
  6. Step 6: Final answer
    x = 168,536.62

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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.