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Finding the Fourth Proportional to 929.55, 1,394.49 and 467.64

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Solution

The fourth proportional to 929.55, 1,394.49 and 467.64 is: 701.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.55 : 1,394.49 = 467.64 : x
  2. Step 2: Convert to fraction form
    929.55/1,394.49 = 467.64/x
  3. Step 3: Cross multiply
    929.55x = 1,394.49 × 467.64
  4. Step 4: Simplify right side
    929.55x = 652,119.30
  5. Step 5: Solve for x
    x = 652,119.30/929.55
  6. Step 6: Final answer
    x = 701.54

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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.