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Finding the Fourth Proportional to 116,895.28, 161,312.26 and 65,907.56

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Solution

The fourth proportional to 116,895.28, 161,312.26 and 65,907.56 is: 90,950.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,895.28 : 161,312.26 = 65,907.56 : x
  2. Step 2: Convert to fraction form
    116,895.28/161,312.26 = 65,907.56/x
  3. Step 3: Cross multiply
    116,895.28x = 161,312.26 × 65,907.56
  4. Step 4: Simplify right side
    116,895.28x = 10,631,697,454.69
  5. Step 5: Solve for x
    x = 10,631,697,454.69/116,895.28
  6. Step 6: Final answer
    x = 90,950.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.