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Finding the Fourth Proportional to 189,161.60, 283,742.40 and 76,841.60

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Solution

The fourth proportional to 189,161.60, 283,742.40 and 76,841.60 is: 115,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,161.60 : 283,742.40 = 76,841.60 : x
  2. Step 2: Convert to fraction form
    189,161.60/283,742.40 = 76,841.60/x
  3. Step 3: Cross multiply
    189,161.60x = 283,742.40 × 76,841.60
  4. Step 4: Simplify right side
    189,161.60x = 21,803,220,003.84
  5. Step 5: Solve for x
    x = 21,803,220,003.84/189,161.60
  6. Step 6: Final answer
    x = 115,262.40

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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.