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Finding the Fourth Proportional to 168,805.20, 252,867.60 and 105,430.80

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Solution

The fourth proportional to 168,805.20, 252,867.60 and 105,430.80 is: 157,933.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,805.20 : 252,867.60 = 105,430.80 : x
  2. Step 2: Convert to fraction form
    168,805.20/252,867.60 = 105,430.80/x
  3. Step 3: Cross multiply
    168,805.20x = 252,867.60 × 105,430.80
  4. Step 4: Simplify right side
    168,805.20x = 26,660,033,362.08
  5. Step 5: Solve for x
    x = 26,660,033,362.08/168,805.20
  6. Step 6: Final answer
    x = 157,933.72

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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.