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Finding the Fourth Proportional to 74,455.20, 111,661.20 and 27,064.80

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Solution

The fourth proportional to 74,455.20, 111,661.20 and 27,064.80 is: 40,589.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,455.20 : 111,661.20 = 27,064.80 : x
  2. Step 2: Convert to fraction form
    74,455.20/111,661.20 = 27,064.80/x
  3. Step 3: Cross multiply
    74,455.20x = 111,661.20 × 27,064.80
  4. Step 4: Simplify right side
    74,455.20x = 3,022,088,045.76
  5. Step 5: Solve for x
    x = 3,022,088,045.76/74,455.20
  6. Step 6: Final answer
    x = 40,589.35

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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.