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Finding the Fourth Proportional to 1,207.04, 1,663.50 and 958.27

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Solution

The fourth proportional to 1,207.04, 1,663.50 and 958.27 is: 1,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.04 : 1,663.50 = 958.27 : x
  2. Step 2: Convert to fraction form
    1,207.04/1,663.50 = 958.27/x
  3. Step 3: Cross multiply
    1,207.04x = 1,663.50 × 958.27
  4. Step 4: Simplify right side
    1,207.04x = 1,594,082.15
  5. Step 5: Solve for x
    x = 1,594,082.15/1,207.04
  6. Step 6: Final answer
    x = 1,320.65

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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.