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Finding the Fourth Proportional to 186,153.21, 278,984.53 and 73,772.17

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Solution

The fourth proportional to 186,153.21, 278,984.53 and 73,772.17 is: 110,561.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,153.21 : 278,984.53 = 73,772.17 : x
  2. Step 2: Convert to fraction form
    186,153.21/278,984.53 = 73,772.17/x
  3. Step 3: Cross multiply
    186,153.21x = 278,984.53 × 73,772.17
  4. Step 4: Simplify right side
    186,153.21x = 20,581,293,361.80
  5. Step 5: Solve for x
    x = 20,581,293,361.80/186,153.21
  6. Step 6: Final answer
    x = 110,561.04

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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.