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Finding the Fourth Proportional to 65,556.93, 90,435.80 and 41,387.84

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Solution

The fourth proportional to 65,556.93, 90,435.80 and 41,387.84 is: 57,094.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,556.93 : 90,435.80 = 41,387.84 : x
  2. Step 2: Convert to fraction form
    65,556.93/90,435.80 = 41,387.84/x
  3. Step 3: Cross multiply
    65,556.93x = 90,435.80 × 41,387.84
  4. Step 4: Simplify right side
    65,556.93x = 3,742,942,524.14
  5. Step 5: Solve for x
    x = 3,742,942,524.14/65,556.93
  6. Step 6: Final answer
    x = 57,094.54

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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.