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Finding the Fourth Proportional to 216,740.40, 325,067.40 and 104,420.40

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Solution

The fourth proportional to 216,740.40, 325,067.40 and 104,420.40 is: 156,609.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,740.40 : 325,067.40 = 104,420.40 : x
  2. Step 2: Convert to fraction form
    216,740.40/325,067.40 = 104,420.40/x
  3. Step 3: Cross multiply
    216,740.40x = 325,067.40 × 104,420.40
  4. Step 4: Simplify right side
    216,740.40x = 33,943,667,934.96
  5. Step 5: Solve for x
    x = 33,943,667,934.96/216,740.40
  6. Step 6: Final answer
    x = 156,609.79

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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.