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Finding the Fourth Proportional to 124,620.60, 186,909.30 and 45,694.20

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Solution

The fourth proportional to 124,620.60, 186,909.30 and 45,694.20 is: 68,533.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,620.60 : 186,909.30 = 45,694.20 : x
  2. Step 2: Convert to fraction form
    124,620.60/186,909.30 = 45,694.20/x
  3. Step 3: Cross multiply
    124,620.60x = 186,909.30 × 45,694.20
  4. Step 4: Simplify right side
    124,620.60x = 8,540,670,936.06
  5. Step 5: Solve for x
    x = 8,540,670,936.06/124,620.60
  6. Step 6: Final answer
    x = 68,533.38

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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.