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Finding the Fourth Proportional to 35,940.70, 53,919.15 and 10,981.90

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Solution

The fourth proportional to 35,940.70, 53,919.15 and 10,981.90 is: 16,475.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,940.70 : 53,919.15 = 10,981.90 : x
  2. Step 2: Convert to fraction form
    35,940.70/53,919.15 = 10,981.90/x
  3. Step 3: Cross multiply
    35,940.70x = 53,919.15 × 10,981.90
  4. Step 4: Simplify right side
    35,940.70x = 592,134,713.39
  5. Step 5: Solve for x
    x = 592,134,713.39/35,940.70
  6. Step 6: Final answer
    x = 16,475.33

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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.