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Finding the Fourth Proportional to 115,513.80, 173,411.10 and 73,393.80

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Solution

The fourth proportional to 115,513.80, 173,411.10 and 73,393.80 is: 110,179.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,513.80 : 173,411.10 = 73,393.80 : x
  2. Step 2: Convert to fraction form
    115,513.80/173,411.10 = 73,393.80/x
  3. Step 3: Cross multiply
    115,513.80x = 173,411.10 × 73,393.80
  4. Step 4: Simplify right side
    115,513.80x = 12,727,299,591.18
  5. Step 5: Solve for x
    x = 12,727,299,591.18/115,513.80
  6. Step 6: Final answer
    x = 110,179.91

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1.5x scale

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.