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Finding the Fourth Proportional to 521,000.70, 780,917.85 and 296,468.70

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Solution

The fourth proportional to 521,000.70, 780,917.85 and 296,468.70 is: 444,371.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,000.70 : 780,917.85 = 296,468.70 : x
  2. Step 2: Convert to fraction form
    521,000.70/780,917.85 = 296,468.70/x
  3. Step 3: Cross multiply
    521,000.70x = 780,917.85 × 296,468.70
  4. Step 4: Simplify right side
    521,000.70x = 231,517,699,796.30
  5. Step 5: Solve for x
    x = 231,517,699,796.30/521,000.70
  6. Step 6: Final answer
    x = 444,371.19

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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.