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Finding the Fourth Proportional to 216,825.94, 325,275.39 and 74,665.54

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Solution

The fourth proportional to 216,825.94, 325,275.39 and 74,665.54 is: 112,010.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,825.94 : 325,275.39 = 74,665.54 : x
  2. Step 2: Convert to fraction form
    216,825.94/325,275.39 = 74,665.54/x
  3. Step 3: Cross multiply
    216,825.94x = 325,275.39 × 74,665.54
  4. Step 4: Simplify right side
    216,825.94x = 24,286,862,643.06
  5. Step 5: Solve for x
    x = 24,286,862,643.06/216,825.94
  6. Step 6: Final answer
    x = 112,010.87

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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.