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Finding the Fourth Proportional to 114,015.60, 170,731.80 and 84,272.40

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Solution

The fourth proportional to 114,015.60, 170,731.80 and 84,272.40 is: 126,193.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,015.60 : 170,731.80 = 84,272.40 : x
  2. Step 2: Convert to fraction form
    114,015.60/170,731.80 = 84,272.40/x
  3. Step 3: Cross multiply
    114,015.60x = 170,731.80 × 84,272.40
  4. Step 4: Simplify right side
    114,015.60x = 14,387,978,542.32
  5. Step 5: Solve for x
    x = 14,387,978,542.32/114,015.60
  6. Step 6: Final answer
    x = 126,193.07

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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.