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Finding the Fourth Proportional to 216,994.55, 325,488.78 and 131,625.71

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Solution

The fourth proportional to 216,994.55, 325,488.78 and 131,625.71 is: 197,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,994.55 : 325,488.78 = 131,625.71 : x
  2. Step 2: Convert to fraction form
    216,994.55/325,488.78 = 131,625.71/x
  3. Step 3: Cross multiply
    216,994.55x = 325,488.78 × 131,625.71
  4. Step 4: Simplify right side
    216,994.55x = 42,842,691,357.67
  5. Step 5: Solve for x
    x = 42,842,691,357.67/216,994.55
  6. Step 6: Final answer
    x = 197,436.72

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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.