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Finding the Fourth Proportional to 620,964.28, 931,252.02 and 411,712.12

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Solution

The fourth proportional to 620,964.28, 931,252.02 and 411,712.12 is: 617,439.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,964.28 : 931,252.02 = 411,712.12 : x
  2. Step 2: Convert to fraction form
    620,964.28/931,252.02 = 411,712.12/x
  3. Step 3: Cross multiply
    620,964.28x = 931,252.02 × 411,712.12
  4. Step 4: Simplify right side
    620,964.28x = 383,407,743,408.48
  5. Step 5: Solve for x
    x = 383,407,743,408.48/620,964.28
  6. Step 6: Final answer
    x = 617,439.29

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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.