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Finding the Fourth Proportional to 124,624.40, 186,960.90 and 49,731.80

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Solution

The fourth proportional to 124,624.40, 186,960.90 and 49,731.80 is: 74,607.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,624.40 : 186,960.90 = 49,731.80 : x
  2. Step 2: Convert to fraction form
    124,624.40/186,960.90 = 49,731.80/x
  3. Step 3: Cross multiply
    124,624.40x = 186,960.90 × 49,731.80
  4. Step 4: Simplify right side
    124,624.40x = 9,297,902,086.62
  5. Step 5: Solve for x
    x = 9,297,902,086.62/124,624.40
  6. Step 6: Final answer
    x = 74,607.40

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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.