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Finding the Fourth Proportional to 286,592.55, 394,814.17 and 200,390.24

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Solution

The fourth proportional to 286,592.55, 394,814.17 and 200,390.24 is: 276,060.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,592.55 : 394,814.17 = 200,390.24 : x
  2. Step 2: Convert to fraction form
    286,592.55/394,814.17 = 200,390.24/x
  3. Step 3: Cross multiply
    286,592.55x = 394,814.17 × 200,390.24
  4. Step 4: Simplify right side
    286,592.55x = 79,116,906,281.70
  5. Step 5: Solve for x
    x = 79,116,906,281.70/286,592.55
  6. Step 6: Final answer
    x = 276,060.58

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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.