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Finding the Fourth Proportional to 290,716.77, 436,075.17 and 91,052.79

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Solution

The fourth proportional to 290,716.77, 436,075.17 and 91,052.79 is: 136,579.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,716.77 : 436,075.17 = 91,052.79 : x
  2. Step 2: Convert to fraction form
    290,716.77/436,075.17 = 91,052.79/x
  3. Step 3: Cross multiply
    290,716.77x = 436,075.17 × 91,052.79
  4. Step 4: Simplify right side
    290,716.77x = 39,705,858,901.49
  5. Step 5: Solve for x
    x = 39,705,858,901.49/290,716.77
  6. Step 6: Final answer
    x = 136,579.18

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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.