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Finding the Fourth Proportional to 352,066.72, 528,097.92 and 115,407.68

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Solution

The fourth proportional to 352,066.72, 528,097.92 and 115,407.68 is: 173,110.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,066.72 : 528,097.92 = 115,407.68 : x
  2. Step 2: Convert to fraction form
    352,066.72/528,097.92 = 115,407.68/x
  3. Step 3: Cross multiply
    352,066.72x = 528,097.92 × 115,407.68
  4. Step 4: Simplify right side
    352,066.72x = 60,946,555,760.03
  5. Step 5: Solve for x
    x = 60,946,555,760.03/352,066.72
  6. Step 6: Final answer
    x = 173,110.81

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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.