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Finding the Fourth Proportional to 194,191.65, 291,286.90 and 87,450.64

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Solution

The fourth proportional to 194,191.65, 291,286.90 and 87,450.64 is: 131,175.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,191.65 : 291,286.90 = 87,450.64 : x
  2. Step 2: Convert to fraction form
    194,191.65/291,286.90 = 87,450.64/x
  3. Step 3: Cross multiply
    194,191.65x = 291,286.90 × 87,450.64
  4. Step 4: Simplify right side
    194,191.65x = 25,473,225,828.62
  5. Step 5: Solve for x
    x = 25,473,225,828.62/194,191.65
  6. Step 6: Final answer
    x = 131,175.70

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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.