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Finding the Fourth Proportional to 79,585.67, 109,825.90 and 43,775.66

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Solution

The fourth proportional to 79,585.67, 109,825.90 and 43,775.66 is: 60,409.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,585.67 : 109,825.90 = 43,775.66 : x
  2. Step 2: Convert to fraction form
    79,585.67/109,825.90 = 43,775.66/x
  3. Step 3: Cross multiply
    79,585.67x = 109,825.90 × 43,775.66
  4. Step 4: Simplify right side
    79,585.67x = 4,807,701,422.72
  5. Step 5: Solve for x
    x = 4,807,701,422.72/79,585.67
  6. Step 6: Final answer
    x = 60,409.13

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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.