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Finding the Fourth Proportional to 594,668.45, 821,323.60 and 391,626.90

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Solution

The fourth proportional to 594,668.45, 821,323.60 and 391,626.90 is: 540,893.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    594,668.45 : 821,323.60 = 391,626.90 : x
  2. Step 2: Convert to fraction form
    594,668.45/821,323.60 = 391,626.90/x
  3. Step 3: Cross multiply
    594,668.45x = 821,323.60 × 391,626.90
  4. Step 4: Simplify right side
    594,668.45x = 321,652,414,385.77
  5. Step 5: Solve for x
    x = 321,652,414,385.77/594,668.45
  6. Step 6: Final answer
    x = 540,893.70

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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.