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Finding the Fourth Proportional to 123,117.80, 184,622.70 and 56,535.80

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Solution

The fourth proportional to 123,117.80, 184,622.70 and 56,535.80 is: 84,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,117.80 : 184,622.70 = 56,535.80 : x
  2. Step 2: Convert to fraction form
    123,117.80/184,622.70 = 56,535.80/x
  3. Step 3: Cross multiply
    123,117.80x = 184,622.70 × 56,535.80
  4. Step 4: Simplify right side
    123,117.80x = 10,437,792,042.66
  5. Step 5: Solve for x
    x = 10,437,792,042.66/123,117.80
  6. Step 6: Final answer
    x = 84,778.90

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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.