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Finding the Fourth Proportional to 1,665.62, 2,495.22 and 932.98

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Solution

The fourth proportional to 1,665.62, 2,495.22 and 932.98 is: 1,397.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.62 : 2,495.22 = 932.98 : x
  2. Step 2: Convert to fraction form
    1,665.62/2,495.22 = 932.98/x
  3. Step 3: Cross multiply
    1,665.62x = 2,495.22 × 932.98
  4. Step 4: Simplify right side
    1,665.62x = 2,327,990.36
  5. Step 5: Solve for x
    x = 2,327,990.36/1,665.62
  6. Step 6: Final answer
    x = 1,397.67

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Why These Related Problems?

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