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Finding the Fourth Proportional to 141,868.70, 212,785.71 and 36,678.86

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Solution

The fourth proportional to 141,868.70, 212,785.71 and 36,678.86 is: 55,013.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,868.70 : 212,785.71 = 36,678.86 : x
  2. Step 2: Convert to fraction form
    141,868.70/212,785.71 = 36,678.86/x
  3. Step 3: Cross multiply
    141,868.70x = 212,785.71 × 36,678.86
  4. Step 4: Simplify right side
    141,868.70x = 7,804,737,267.09
  5. Step 5: Solve for x
    x = 7,804,737,267.09/141,868.70
  6. Step 6: Final answer
    x = 55,013.81

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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.