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Finding the Fourth Proportional to 668,064.28, 920,692.27 and 474,480.46

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Solution

The fourth proportional to 668,064.28, 920,692.27 and 474,480.46 is: 653,904.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,064.28 : 920,692.27 = 474,480.46 : x
  2. Step 2: Convert to fraction form
    668,064.28/920,692.27 = 474,480.46/x
  3. Step 3: Cross multiply
    668,064.28x = 920,692.27 × 474,480.46
  4. Step 4: Simplify right side
    668,064.28x = 436,850,491,788.04
  5. Step 5: Solve for x
    x = 436,850,491,788.04/668,064.28
  6. Step 6: Final answer
    x = 653,904.88

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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.