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Finding the Fourth Proportional to 681,553.71, 940,704.48 and 423,625.50

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Solution

The fourth proportional to 681,553.71, 940,704.48 and 423,625.50 is: 584,702.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,553.71 : 940,704.48 = 423,625.50 : x
  2. Step 2: Convert to fraction form
    681,553.71/940,704.48 = 423,625.50/x
  3. Step 3: Cross multiply
    681,553.71x = 940,704.48 × 423,625.50
  4. Step 4: Simplify right side
    681,553.71x = 398,506,405,692.24
  5. Step 5: Solve for x
    x = 398,506,405,692.24/681,553.71
  6. Step 6: Final answer
    x = 584,702.86

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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.