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Finding the Fourth Proportional to 621,998.80, 933,113.40 and 201,288.40

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Solution

The fourth proportional to 621,998.80, 933,113.40 and 201,288.40 is: 301,969.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,998.80 : 933,113.40 = 201,288.40 : x
  2. Step 2: Convert to fraction form
    621,998.80/933,113.40 = 201,288.40/x
  3. Step 3: Cross multiply
    621,998.80x = 933,113.40 × 201,288.40
  4. Step 4: Simplify right side
    621,998.80x = 187,824,903,304.56
  5. Step 5: Solve for x
    x = 187,824,903,304.56/621,998.80
  6. Step 6: Final answer
    x = 301,969.88

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Similar ratio
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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.