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Finding the Fourth Proportional to 74,361.42, 111,525.74 and 21,775.01

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Solution

The fourth proportional to 74,361.42, 111,525.74 and 21,775.01 is: 32,657.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,361.42 : 111,525.74 = 21,775.01 : x
  2. Step 2: Convert to fraction form
    74,361.42/111,525.74 = 21,775.01/x
  3. Step 3: Cross multiply
    74,361.42x = 111,525.74 × 21,775.01
  4. Step 4: Simplify right side
    74,361.42x = 2,428,473,437.25
  5. Step 5: Solve for x
    x = 2,428,473,437.25/74,361.42
  6. Step 6: Final answer
    x = 32,657.71

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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.