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Finding the Fourth Proportional to 124,931, 187,396.68 and 51,059

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Solution

The fourth proportional to 124,931, 187,396.68 and 51,059 is: 76,588.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,931 : 187,396.68 = 51,059 : x
  2. Step 2: Convert to fraction form
    124,931/187,396.68 = 51,059/x
  3. Step 3: Cross multiply
    124,931x = 187,396.68 × 51,059
  4. Step 4: Simplify right side
    124,931x = 9,568,287,084.12
  5. Step 5: Solve for x
    x = 9,568,287,084.12/124,931
  6. Step 6: Final answer
    x = 76,588.57

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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.