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Finding the Fourth Proportional to 124,506.81, 186,759.81 and 74,601.90

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Solution

The fourth proportional to 124,506.81, 186,759.81 and 74,601.90 is: 111,902.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,506.81 : 186,759.81 = 74,601.90 : x
  2. Step 2: Convert to fraction form
    124,506.81/186,759.81 = 74,601.90/x
  3. Step 3: Cross multiply
    124,506.81x = 186,759.81 × 74,601.90
  4. Step 4: Simplify right side
    124,506.81x = 13,932,636,669.64
  5. Step 5: Solve for x
    x = 13,932,636,669.64/124,506.81
  6. Step 6: Final answer
    x = 111,902.61

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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.