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Finding the Fourth Proportional to 73,108.56, 109,668.24 and 64,403.76

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Solution

The fourth proportional to 73,108.56, 109,668.24 and 64,403.76 is: 96,610.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,108.56 : 109,668.24 = 64,403.76 : x
  2. Step 2: Convert to fraction form
    73,108.56/109,668.24 = 64,403.76/x
  3. Step 3: Cross multiply
    73,108.56x = 109,668.24 × 64,403.76
  4. Step 4: Simplify right side
    73,108.56x = 7,063,047,008.58
  5. Step 5: Solve for x
    x = 7,063,047,008.58/73,108.56
  6. Step 6: Final answer
    x = 96,610.40

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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.