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Finding the Fourth Proportional to 115,937.60, 173,906.40 and 56,742.80

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Solution

The fourth proportional to 115,937.60, 173,906.40 and 56,742.80 is: 85,114.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,937.60 : 173,906.40 = 56,742.80 : x
  2. Step 2: Convert to fraction form
    115,937.60/173,906.40 = 56,742.80/x
  3. Step 3: Cross multiply
    115,937.60x = 173,906.40 × 56,742.80
  4. Step 4: Simplify right side
    115,937.60x = 9,867,936,073.92
  5. Step 5: Solve for x
    x = 9,867,936,073.92/115,937.60
  6. Step 6: Final answer
    x = 85,114.20

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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.