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Finding the Fourth Proportional to 66,171.68, 99,273.84 and 19,424.56

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Solution

The fourth proportional to 66,171.68, 99,273.84 and 19,424.56 is: 29,141.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,171.68 : 99,273.84 = 19,424.56 : x
  2. Step 2: Convert to fraction form
    66,171.68/99,273.84 = 19,424.56/x
  3. Step 3: Cross multiply
    66,171.68x = 99,273.84 × 19,424.56
  4. Step 4: Simplify right side
    66,171.68x = 1,928,350,661.51
  5. Step 5: Solve for x
    x = 1,928,350,661.51/66,171.68
  6. Step 6: Final answer
    x = 29,141.63

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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.