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Finding the Fourth Proportional to 1,174.68, 1,761.98 and 395.16

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Solution

The fourth proportional to 1,174.68, 1,761.98 and 395.16 is: 592.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.68 : 1,761.98 = 395.16 : x
  2. Step 2: Convert to fraction form
    1,174.68/1,761.98 = 395.16/x
  3. Step 3: Cross multiply
    1,174.68x = 1,761.98 × 395.16
  4. Step 4: Simplify right side
    1,174.68x = 696,262.04
  5. Step 5: Solve for x
    x = 696,262.04/1,174.68
  6. Step 6: Final answer
    x = 592.72

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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.