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Finding the Fourth Proportional to 956,422.80, 1,431,523.80 and 744,915.60

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Solution

The fourth proportional to 956,422.80, 1,431,523.80 and 744,915.60 is: 1,114,950.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    956,422.80 : 1,431,523.80 = 744,915.60 : x
  2. Step 2: Convert to fraction form
    956,422.80/1,431,523.80 = 744,915.60/x
  3. Step 3: Cross multiply
    956,422.80x = 1,431,523.80 × 744,915.60
  4. Step 4: Simplify right side
    956,422.80x = 1,066,364,410,391.28
  5. Step 5: Solve for x
    x = 1,066,364,410,391.28/956,422.80
  6. Step 6: Final answer
    x = 1,114,950.85

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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.