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Finding the Fourth Proportional to 119,079.36, 178,530.21 and 51,539.94

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Solution

The fourth proportional to 119,079.36, 178,530.21 and 51,539.94 is: 77,271.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,079.36 : 178,530.21 = 51,539.94 : x
  2. Step 2: Convert to fraction form
    119,079.36/178,530.21 = 51,539.94/x
  3. Step 3: Cross multiply
    119,079.36x = 178,530.21 × 51,539.94
  4. Step 4: Simplify right side
    119,079.36x = 9,201,436,311.59
  5. Step 5: Solve for x
    x = 9,201,436,311.59/119,079.36
  6. Step 6: Final answer
    x = 77,271.46

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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.