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Finding the Fourth Proportional to 78,750.84, 118,059.23 and 34,344.48

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Solution

The fourth proportional to 78,750.84, 118,059.23 and 34,344.48 is: 51,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,750.84 : 118,059.23 = 34,344.48 : x
  2. Step 2: Convert to fraction form
    78,750.84/118,059.23 = 34,344.48/x
  3. Step 3: Cross multiply
    78,750.84x = 118,059.23 × 34,344.48
  4. Step 4: Simplify right side
    78,750.84x = 4,054,682,949.41
  5. Step 5: Solve for x
    x = 4,054,682,949.41/78,750.84
  6. Step 6: Final answer
    x = 51,487.49

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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.