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Finding the Fourth Proportional to 73,090.28, 100,864.53 and 39,556.28

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Solution

The fourth proportional to 73,090.28, 100,864.53 and 39,556.28 is: 54,587.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,090.28 : 100,864.53 = 39,556.28 : x
  2. Step 2: Convert to fraction form
    73,090.28/100,864.53 = 39,556.28/x
  3. Step 3: Cross multiply
    73,090.28x = 100,864.53 × 39,556.28
  4. Step 4: Simplify right side
    73,090.28x = 3,989,825,590.75
  5. Step 5: Solve for x
    x = 3,989,825,590.75/73,090.28
  6. Step 6: Final answer
    x = 54,587.64

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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.