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Finding the Fourth Proportional to 620,450.16, 930,638.16 and 221,069.76

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Solution

The fourth proportional to 620,450.16, 930,638.16 and 221,069.76 is: 331,591.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,450.16 : 930,638.16 = 221,069.76 : x
  2. Step 2: Convert to fraction form
    620,450.16/930,638.16 = 221,069.76/x
  3. Step 3: Cross multiply
    620,450.16x = 930,638.16 × 221,069.76
  4. Step 4: Simplify right side
    620,450.16x = 205,735,954,678.04
  5. Step 5: Solve for x
    x = 205,735,954,678.04/620,450.16
  6. Step 6: Final answer
    x = 331,591.43

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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.