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Finding the Fourth Proportional to 940.92, 1,298.62 and 567.96

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Solution

The fourth proportional to 940.92, 1,298.62 and 567.96 is: 783.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.92 : 1,298.62 = 567.96 : x
  2. Step 2: Convert to fraction form
    940.92/1,298.62 = 567.96/x
  3. Step 3: Cross multiply
    940.92x = 1,298.62 × 567.96
  4. Step 4: Simplify right side
    940.92x = 737,559.14
  5. Step 5: Solve for x
    x = 737,559.14/940.92
  6. Step 6: Final answer
    x = 783.87

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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.