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Finding the Fourth Proportional to 363,918.72, 545,802.78 and 97,615.92

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Solution

The fourth proportional to 363,918.72, 545,802.78 and 97,615.92 is: 146,403.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,918.72 : 545,802.78 = 97,615.92 : x
  2. Step 2: Convert to fraction form
    363,918.72/545,802.78 = 97,615.92/x
  3. Step 3: Cross multiply
    363,918.72x = 545,802.78 × 97,615.92
  4. Step 4: Simplify right side
    363,918.72x = 53,279,040,508.26
  5. Step 5: Solve for x
    x = 53,279,040,508.26/363,918.72
  6. Step 6: Final answer
    x = 146,403.68

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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.