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Finding the Fourth Proportional to 122,357.85, 183,603.65 and 47,480.94

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Solution

The fourth proportional to 122,357.85, 183,603.65 and 47,480.94 is: 71,247.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,357.85 : 183,603.65 = 47,480.94 : x
  2. Step 2: Convert to fraction form
    122,357.85/183,603.65 = 47,480.94/x
  3. Step 3: Cross multiply
    122,357.85x = 183,603.65 × 47,480.94
  4. Step 4: Simplify right side
    122,357.85x = 8,717,673,652.03
  5. Step 5: Solve for x
    x = 8,717,673,652.03/122,357.85
  6. Step 6: Final answer
    x = 71,247.36

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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.