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Finding the Fourth Proportional to 381,000.87, 525,798.27 and 217,671.66

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Solution

The fourth proportional to 381,000.87, 525,798.27 and 217,671.66 is: 300,396.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,000.87 : 525,798.27 = 217,671.66 : x
  2. Step 2: Convert to fraction form
    381,000.87/525,798.27 = 217,671.66/x
  3. Step 3: Cross multiply
    381,000.87x = 525,798.27 × 217,671.66
  4. Step 4: Simplify right side
    381,000.87x = 114,451,382,256.03
  5. Step 5: Solve for x
    x = 114,451,382,256.03/381,000.87
  6. Step 6: Final answer
    x = 300,396.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.