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Finding the Fourth Proportional to 76,578.33, 105,687.41 and 46,362.90

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Solution

The fourth proportional to 76,578.33, 105,687.41 and 46,362.90 is: 63,986.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,578.33 : 105,687.41 = 46,362.90 : x
  2. Step 2: Convert to fraction form
    76,578.33/105,687.41 = 46,362.90/x
  3. Step 3: Cross multiply
    76,578.33x = 105,687.41 × 46,362.90
  4. Step 4: Simplify right side
    76,578.33x = 4,899,974,821.09
  5. Step 5: Solve for x
    x = 4,899,974,821.09/76,578.33
  6. Step 6: Final answer
    x = 63,986.44

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1.5x scale

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.