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Finding the Fourth Proportional to 290,800.88, 436,201.48 and 91,136.82

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Solution

The fourth proportional to 290,800.88, 436,201.48 and 91,136.82 is: 136,705.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,800.88 : 436,201.48 = 91,136.82 : x
  2. Step 2: Convert to fraction form
    290,800.88/436,201.48 = 91,136.82/x
  3. Step 3: Cross multiply
    290,800.88x = 436,201.48 × 91,136.82
  4. Step 4: Simplify right side
    290,800.88x = 39,754,016,033.03
  5. Step 5: Solve for x
    x = 39,754,016,033.03/290,800.88
  6. Step 6: Final answer
    x = 136,705.28

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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.