Home / 76,613.31-114,919.57-19,687.17

Finding the Fourth Proportional to 76,613.31, 114,919.57 and 19,687.17

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Solution

The fourth proportional to 76,613.31, 114,919.57 and 19,687.17 is: 29,530.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,613.31 : 114,919.57 = 19,687.17 : x
  2. Step 2: Convert to fraction form
    76,613.31/114,919.57 = 19,687.17/x
  3. Step 3: Cross multiply
    76,613.31x = 114,919.57 × 19,687.17
  4. Step 4: Simplify right side
    76,613.31x = 2,262,441,110.92
  5. Step 5: Solve for x
    x = 2,262,441,110.92/76,613.31
  6. Step 6: Final answer
    x = 29,530.65

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1.5x scale

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.