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Finding the Fourth Proportional to 681,544.71, 940,692.06 and 423,616.50

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Solution

The fourth proportional to 681,544.71, 940,692.06 and 423,616.50 is: 584,690.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,544.71 : 940,692.06 = 423,616.50 : x
  2. Step 2: Convert to fraction form
    681,544.71/940,692.06 = 423,616.50/x
  3. Step 3: Cross multiply
    681,544.71x = 940,692.06 × 423,616.50
  4. Step 4: Simplify right side
    681,544.71x = 398,492,678,034.99
  5. Step 5: Solve for x
    x = 398,492,678,034.99/681,544.71
  6. Step 6: Final answer
    x = 584,690.44

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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.