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Finding the Fourth Proportional to 746.98, 1,114.99 and 692

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Solution

The fourth proportional to 746.98, 1,114.99 and 692 is: 1,032.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.98 : 1,114.99 = 692 : x
  2. Step 2: Convert to fraction form
    746.98/1,114.99 = 692/x
  3. Step 3: Cross multiply
    746.98x = 1,114.99 × 692
  4. Step 4: Simplify right side
    746.98x = 771,573.08
  5. Step 5: Solve for x
    x = 771,573.08/746.98
  6. Step 6: Final answer
    x = 1,032.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.