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Finding the Fourth Proportional to 352,458.32, 528,791.16 and 141,987.92

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Solution

The fourth proportional to 352,458.32, 528,791.16 and 141,987.92 is: 213,023.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,458.32 : 528,791.16 = 141,987.92 : x
  2. Step 2: Convert to fraction form
    352,458.32/528,791.16 = 141,987.92/x
  3. Step 3: Cross multiply
    352,458.32x = 528,791.16 × 141,987.92
  4. Step 4: Simplify right side
    352,458.32x = 75,081,956,922.79
  5. Step 5: Solve for x
    x = 75,081,956,922.79/352,458.32
  6. Step 6: Final answer
    x = 213,023.65

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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.