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Finding the Fourth Proportional to 74,560.64, 111,840.95 and 27,179.28

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Solution

The fourth proportional to 74,560.64, 111,840.95 and 27,179.28 is: 40,768.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,560.64 : 111,840.95 = 27,179.28 : x
  2. Step 2: Convert to fraction form
    74,560.64/111,840.95 = 27,179.28/x
  3. Step 3: Cross multiply
    74,560.64x = 111,840.95 × 27,179.28
  4. Step 4: Simplify right side
    74,560.64x = 3,039,756,563.46
  5. Step 5: Solve for x
    x = 3,039,756,563.46/74,560.64
  6. Step 6: Final answer
    x = 40,768.92

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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.