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Finding the Fourth Proportional to 59,198.59, 81,663.70 and 40,079.05

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Solution

The fourth proportional to 59,198.59, 81,663.70 and 40,079.05 is: 55,288.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,198.59 : 81,663.70 = 40,079.05 : x
  2. Step 2: Convert to fraction form
    59,198.59/81,663.70 = 40,079.05/x
  3. Step 3: Cross multiply
    59,198.59x = 81,663.70 × 40,079.05
  4. Step 4: Simplify right side
    59,198.59x = 3,273,003,515.49
  5. Step 5: Solve for x
    x = 3,273,003,515.49/59,198.59
  6. Step 6: Final answer
    x = 55,288.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.