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Finding the Fourth Proportional to 580,923.40, 871,269.90 and 281,403.40

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Solution

The fourth proportional to 580,923.40, 871,269.90 and 281,403.40 is: 422,049.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,923.40 : 871,269.90 = 281,403.40 : x
  2. Step 2: Convert to fraction form
    580,923.40/871,269.90 = 281,403.40/x
  3. Step 3: Cross multiply
    580,923.40x = 871,269.90 × 281,403.40
  4. Step 4: Simplify right side
    580,923.40x = 245,178,312,177.66
  5. Step 5: Solve for x
    x = 245,178,312,177.66/580,923.40
  6. Step 6: Final answer
    x = 422,049.30

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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.