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Finding the Fourth Proportional to 999.63, 1,506.93 and 932.73

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Solution

The fourth proportional to 999.63, 1,506.93 and 932.73 is: 1,406.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.63 : 1,506.93 = 932.73 : x
  2. Step 2: Convert to fraction form
    999.63/1,506.93 = 932.73/x
  3. Step 3: Cross multiply
    999.63x = 1,506.93 × 932.73
  4. Step 4: Simplify right side
    999.63x = 1,405,558.82
  5. Step 5: Solve for x
    x = 1,405,558.82/999.63
  6. Step 6: Final answer
    x = 1,406.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.