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Finding the Fourth Proportional to 74,361.61, 111,526.01 and 21,775.20

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Solution

The fourth proportional to 74,361.61, 111,526.01 and 21,775.20 is: 32,657.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,361.61 : 111,526.01 = 21,775.20 : x
  2. Step 2: Convert to fraction form
    74,361.61/111,526.01 = 21,775.20/x
  3. Step 3: Cross multiply
    74,361.61x = 111,526.01 × 21,775.20
  4. Step 4: Simplify right side
    74,361.61x = 2,428,500,850.00
  5. Step 5: Solve for x
    x = 2,428,500,850.00/74,361.61
  6. Step 6: Final answer
    x = 32,657.99

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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.