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Finding the Fourth Proportional to 98,806.72, 136,351.92 and 54,094.72

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Solution

The fourth proportional to 98,806.72, 136,351.92 and 54,094.72 is: 74,649.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,806.72 : 136,351.92 = 54,094.72 : x
  2. Step 2: Convert to fraction form
    98,806.72/136,351.92 = 54,094.72/x
  3. Step 3: Cross multiply
    98,806.72x = 136,351.92 × 54,094.72
  4. Step 4: Simplify right side
    98,806.72x = 7,375,918,933.86
  5. Step 5: Solve for x
    x = 7,375,918,933.86/98,806.72
  6. Step 6: Final answer
    x = 74,649.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.