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Finding the Fourth Proportional to 119,290.70, 178,936.09 and 56,064.40

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Solution

The fourth proportional to 119,290.70, 178,936.09 and 56,064.40 is: 84,096.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,290.70 : 178,936.09 = 56,064.40 : x
  2. Step 2: Convert to fraction form
    119,290.70/178,936.09 = 56,064.40/x
  3. Step 3: Cross multiply
    119,290.70x = 178,936.09 × 56,064.40
  4. Step 4: Simplify right side
    119,290.70x = 10,031,943,936.69
  5. Step 5: Solve for x
    x = 10,031,943,936.69/119,290.70
  6. Step 6: Final answer
    x = 84,096.61

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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.