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Finding the Fourth Proportional to 312,732.99, 469,099.50 and 125,700.75

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Solution

The fourth proportional to 312,732.99, 469,099.50 and 125,700.75 is: 188,551.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,732.99 : 469,099.50 = 125,700.75 : x
  2. Step 2: Convert to fraction form
    312,732.99/469,099.50 = 125,700.75/x
  3. Step 3: Cross multiply
    312,732.99x = 469,099.50 × 125,700.75
  4. Step 4: Simplify right side
    312,732.99x = 58,966,158,974.63
  5. Step 5: Solve for x
    x = 58,966,158,974.63/312,732.99
  6. Step 6: Final answer
    x = 188,551.13

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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.