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Finding the Fourth Proportional to 253,287.80, 379,931.62 and 95,479.35

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Solution

The fourth proportional to 253,287.80, 379,931.62 and 95,479.35 is: 143,218.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,287.80 : 379,931.62 = 95,479.35 : x
  2. Step 2: Convert to fraction form
    253,287.80/379,931.62 = 95,479.35/x
  3. Step 3: Cross multiply
    253,287.80x = 379,931.62 × 95,479.35
  4. Step 4: Simplify right side
    253,287.80x = 36,275,624,122.05
  5. Step 5: Solve for x
    x = 36,275,624,122.05/253,287.80
  6. Step 6: Final answer
    x = 143,218.99

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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.