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Finding the Fourth Proportional to 620,451.66, 930,640.41 and 221,071.26

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Solution

The fourth proportional to 620,451.66, 930,640.41 and 221,071.26 is: 331,593.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,451.66 : 930,640.41 = 221,071.26 : x
  2. Step 2: Convert to fraction form
    620,451.66/930,640.41 = 221,071.26/x
  3. Step 3: Cross multiply
    620,451.66x = 930,640.41 × 221,071.26
  4. Step 4: Simplify right side
    620,451.66x = 205,737,848,045.62
  5. Step 5: Solve for x
    x = 205,737,848,045.62/620,451.66
  6. Step 6: Final answer
    x = 331,593.68

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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.