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Finding the Fourth Proportional to 1,124.26, 1,551.50 and 626.94

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Solution

The fourth proportional to 1,124.26, 1,551.50 and 626.94 is: 865.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124.26 : 1,551.50 = 626.94 : x
  2. Step 2: Convert to fraction form
    1,124.26/1,551.50 = 626.94/x
  3. Step 3: Cross multiply
    1,124.26x = 1,551.50 × 626.94
  4. Step 4: Simplify right side
    1,124.26x = 972,697.41
  5. Step 5: Solve for x
    x = 972,697.41/1,124.26
  6. Step 6: Final answer
    x = 865.19

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Why These Related Problems?

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