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Finding the Fourth Proportional to 189,230.40, 283,845.57 and 76,910.18

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Solution

The fourth proportional to 189,230.40, 283,845.57 and 76,910.18 is: 115,365.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,230.40 : 283,845.57 = 76,910.18 : x
  2. Step 2: Convert to fraction form
    189,230.40/283,845.57 = 76,910.18/x
  3. Step 3: Cross multiply
    189,230.40x = 283,845.57 × 76,910.18
  4. Step 4: Simplify right side
    189,230.40x = 21,830,612,461.67
  5. Step 5: Solve for x
    x = 21,830,612,461.67/189,230.40
  6. Step 6: Final answer
    x = 115,365.25

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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.