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Finding the Fourth Proportional to 313,263.54, 469,895.28 and 76,603.38

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Solution

The fourth proportional to 313,263.54, 469,895.28 and 76,603.38 is: 114,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,263.54 : 469,895.28 = 76,603.38 : x
  2. Step 2: Convert to fraction form
    313,263.54/469,895.28 = 76,603.38/x
  3. Step 3: Cross multiply
    313,263.54x = 469,895.28 × 76,603.38
  4. Step 4: Simplify right side
    313,263.54x = 35,995,566,694.05
  5. Step 5: Solve for x
    x = 35,995,566,694.05/313,263.54
  6. Step 6: Final answer
    x = 114,905.06

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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.