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Finding the Fourth Proportional to 620,433.28, 856,065.11 and 362,193.03

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Solution

The fourth proportional to 620,433.28, 856,065.11 and 362,193.03 is: 499,748.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,433.28 : 856,065.11 = 362,193.03 : x
  2. Step 2: Convert to fraction form
    620,433.28/856,065.11 = 362,193.03/x
  3. Step 3: Cross multiply
    620,433.28x = 856,065.11 × 362,193.03
  4. Step 4: Simplify right side
    620,433.28x = 310,060,816,973.67
  5. Step 5: Solve for x
    x = 310,060,816,973.67/620,433.28
  6. Step 6: Final answer
    x = 499,748.85

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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.