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Finding the Fourth Proportional to 115,384.80, 173,217.60 and 73,264.80

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Solution

The fourth proportional to 115,384.80, 173,217.60 and 73,264.80 is: 109,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,384.80 : 173,217.60 = 73,264.80 : x
  2. Step 2: Convert to fraction form
    115,384.80/173,217.60 = 73,264.80/x
  3. Step 3: Cross multiply
    115,384.80x = 173,217.60 × 73,264.80
  4. Step 4: Simplify right side
    115,384.80x = 12,690,752,820.48
  5. Step 5: Solve for x
    x = 12,690,752,820.48/115,384.80
  6. Step 6: Final answer
    x = 109,986.35

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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.