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Finding the Fourth Proportional to 115,906.80, 173,975.40 and 56,809.20

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Solution

The fourth proportional to 115,906.80, 173,975.40 and 56,809.20 is: 85,270.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,906.80 : 173,975.40 = 56,809.20 : x
  2. Step 2: Convert to fraction form
    115,906.80/173,975.40 = 56,809.20/x
  3. Step 3: Cross multiply
    115,906.80x = 173,975.40 × 56,809.20
  4. Step 4: Simplify right side
    115,906.80x = 9,883,403,293.68
  5. Step 5: Solve for x
    x = 9,883,403,293.68/115,906.80
  6. Step 6: Final answer
    x = 85,270.26

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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.