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Finding the Fourth Proportional to 216,666.31, 325,035.77 and 74,505.84

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Solution

The fourth proportional to 216,666.31, 325,035.77 and 74,505.84 is: 111,771.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,666.31 : 325,035.77 = 74,505.84 : x
  2. Step 2: Convert to fraction form
    216,666.31/325,035.77 = 74,505.84/x
  3. Step 3: Cross multiply
    216,666.31x = 325,035.77 × 74,505.84
  4. Step 4: Simplify right side
    216,666.31x = 24,217,062,701.37
  5. Step 5: Solve for x
    x = 24,217,062,701.37/216,666.31
  6. Step 6: Final answer
    x = 111,771.25

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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.