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Finding the Fourth Proportional to 122,940.80, 184,411.20 and 60,603.20

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Solution

The fourth proportional to 122,940.80, 184,411.20 and 60,603.20 is: 90,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,940.80 : 184,411.20 = 60,603.20 : x
  2. Step 2: Convert to fraction form
    122,940.80/184,411.20 = 60,603.20/x
  3. Step 3: Cross multiply
    122,940.80x = 184,411.20 × 60,603.20
  4. Step 4: Simplify right side
    122,940.80x = 11,175,908,835.84
  5. Step 5: Solve for x
    x = 11,175,908,835.84/122,940.80
  6. Step 6: Final answer
    x = 90,904.80

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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.