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Finding the Fourth Proportional to 641,000.21, 961,501.94 and 261,920.94

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Solution

The fourth proportional to 641,000.21, 961,501.94 and 261,920.94 is: 392,882.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,000.21 : 961,501.94 = 261,920.94 : x
  2. Step 2: Convert to fraction form
    641,000.21/961,501.94 = 261,920.94/x
  3. Step 3: Cross multiply
    641,000.21x = 961,501.94 × 261,920.94
  4. Step 4: Simplify right side
    641,000.21x = 251,837,488,003.59
  5. Step 5: Solve for x
    x = 251,837,488,003.59/641,000.21
  6. Step 6: Final answer
    x = 392,882.07

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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.