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Finding the Fourth Proportional to 495,571.11, 683,866.22 and 280,706.86

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Solution

The fourth proportional to 495,571.11, 683,866.22 and 280,706.86 is: 387,363.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,571.11 : 683,866.22 = 280,706.86 : x
  2. Step 2: Convert to fraction form
    495,571.11/683,866.22 = 280,706.86/x
  3. Step 3: Cross multiply
    495,571.11x = 683,866.22 × 280,706.86
  4. Step 4: Simplify right side
    495,571.11x = 191,965,939,276.27
  5. Step 5: Solve for x
    x = 191,965,939,276.27/495,571.11
  6. Step 6: Final answer
    x = 387,363.06

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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.