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Finding the Fourth Proportional to 1,411.31, 2,116.94 and 753.41

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Solution

The fourth proportional to 1,411.31, 2,116.94 and 753.41 is: 1,130.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.31 : 2,116.94 = 753.41 : x
  2. Step 2: Convert to fraction form
    1,411.31/2,116.94 = 753.41/x
  3. Step 3: Cross multiply
    1,411.31x = 2,116.94 × 753.41
  4. Step 4: Simplify right side
    1,411.31x = 1,594,920.00
  5. Step 5: Solve for x
    x = 1,594,920.00/1,411.31
  6. Step 6: Final answer
    x = 1,130.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.