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Finding the Fourth Proportional to 124,312.80, 186,469.20 and 104,629.80

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Solution

The fourth proportional to 124,312.80, 186,469.20 and 104,629.80 is: 156,944.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,312.80 : 186,469.20 = 104,629.80 : x
  2. Step 2: Convert to fraction form
    124,312.80/186,469.20 = 104,629.80/x
  3. Step 3: Cross multiply
    124,312.80x = 186,469.20 × 104,629.80
  4. Step 4: Simplify right side
    124,312.80x = 19,510,235,102.16
  5. Step 5: Solve for x
    x = 19,510,235,102.16/124,312.80
  6. Step 6: Final answer
    x = 156,944.70

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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.