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Finding the Fourth Proportional to 931,628.28, 1,397,494.26 and 266,763

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Solution

The fourth proportional to 931,628.28, 1,397,494.26 and 266,763 is: 400,159.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,628.28 : 1,397,494.26 = 266,763 : x
  2. Step 2: Convert to fraction form
    931,628.28/1,397,494.26 = 266,763/x
  3. Step 3: Cross multiply
    931,628.28x = 1,397,494.26 × 266,763
  4. Step 4: Simplify right side
    931,628.28x = 372,799,761,280.38
  5. Step 5: Solve for x
    x = 372,799,761,280.38/931,628.28
  6. Step 6: Final answer
    x = 400,159.34

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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.