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Finding the Fourth Proportional to 70,245.60, 105,221.20 and 32,837.60

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Solution

The fourth proportional to 70,245.60, 105,221.20 and 32,837.60 is: 49,187.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,245.60 : 105,221.20 = 32,837.60 : x
  2. Step 2: Convert to fraction form
    70,245.60/105,221.20 = 32,837.60/x
  3. Step 3: Cross multiply
    70,245.60x = 105,221.20 × 32,837.60
  4. Step 4: Simplify right side
    70,245.60x = 3,455,211,677.12
  5. Step 5: Solve for x
    x = 3,455,211,677.12/70,245.60
  6. Step 6: Final answer
    x = 49,187.59

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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.