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Finding the Fourth Proportional to 291,178.41, 436,786.45 and 91,507.13

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Solution

The fourth proportional to 291,178.41, 436,786.45 and 91,507.13 is: 137,266.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,178.41 : 436,786.45 = 91,507.13 : x
  2. Step 2: Convert to fraction form
    291,178.41/436,786.45 = 91,507.13/x
  3. Step 3: Cross multiply
    291,178.41x = 436,786.45 × 91,507.13
  4. Step 4: Simplify right side
    291,178.41x = 39,969,075,325.59
  5. Step 5: Solve for x
    x = 39,969,075,325.59/291,178.41
  6. Step 6: Final answer
    x = 137,266.62

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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.