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Finding the Fourth Proportional to 29,996.20, 44,990.34 and 7,811.20

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Solution

The fourth proportional to 29,996.20, 44,990.34 and 7,811.20 is: 11,715.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,996.20 : 44,990.34 = 7,811.20 : x
  2. Step 2: Convert to fraction form
    29,996.20/44,990.34 = 7,811.20/x
  3. Step 3: Cross multiply
    29,996.20x = 44,990.34 × 7,811.20
  4. Step 4: Simplify right side
    29,996.20x = 351,428,543.81
  5. Step 5: Solve for x
    x = 351,428,543.81/29,996.20
  6. Step 6: Final answer
    x = 11,715.77

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1.5x scale

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.