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Finding the Fourth Proportional to 580,922.40, 871,268.40 and 281,402.40

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Solution

The fourth proportional to 580,922.40, 871,268.40 and 281,402.40 is: 422,047.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,922.40 : 871,268.40 = 281,402.40 : x
  2. Step 2: Convert to fraction form
    580,922.40/871,268.40 = 281,402.40/x
  3. Step 3: Cross multiply
    580,922.40x = 871,268.40 × 281,402.40
  4. Step 4: Simplify right side
    580,922.40x = 245,177,018,804.16
  5. Step 5: Solve for x
    x = 245,177,018,804.16/580,922.40
  6. Step 6: Final answer
    x = 422,047.80

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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.