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Finding the Fourth Proportional to 133,315.59, 183,975.62 and 72,885.27

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Solution

The fourth proportional to 133,315.59, 183,975.62 and 72,885.27 is: 100,581.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,315.59 : 183,975.62 = 72,885.27 : x
  2. Step 2: Convert to fraction form
    133,315.59/183,975.62 = 72,885.27/x
  3. Step 3: Cross multiply
    133,315.59x = 183,975.62 × 72,885.27
  4. Step 4: Simplify right side
    133,315.59x = 13,409,112,372.69
  5. Step 5: Solve for x
    x = 13,409,112,372.69/133,315.59
  6. Step 6: Final answer
    x = 100,581.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.