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Finding the Fourth Proportional to 216,861.87, 325,230.37 and 74,701.40

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Solution

The fourth proportional to 216,861.87, 325,230.37 and 74,701.40 is: 112,030.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,861.87 : 325,230.37 = 74,701.40 : x
  2. Step 2: Convert to fraction form
    216,861.87/325,230.37 = 74,701.40/x
  3. Step 3: Cross multiply
    216,861.87x = 325,230.37 × 74,701.40
  4. Step 4: Simplify right side
    216,861.87x = 24,295,163,961.52
  5. Step 5: Solve for x
    x = 24,295,163,961.52/216,861.87
  6. Step 6: Final answer
    x = 112,030.59

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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.