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Finding the Fourth Proportional to 1,375.56, 1,897.98 and 785.94

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Solution

The fourth proportional to 1,375.56, 1,897.98 and 785.94 is: 1,084.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375.56 : 1,897.98 = 785.94 : x
  2. Step 2: Convert to fraction form
    1,375.56/1,897.98 = 785.94/x
  3. Step 3: Cross multiply
    1,375.56x = 1,897.98 × 785.94
  4. Step 4: Simplify right side
    1,375.56x = 1,491,698.40
  5. Step 5: Solve for x
    x = 1,491,698.40/1,375.56
  6. Step 6: Final answer
    x = 1,084.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.