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Finding the Fourth Proportional to 924.23, 1,275.78 and 574.85

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Solution

The fourth proportional to 924.23, 1,275.78 and 574.85 is: 793.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.23 : 1,275.78 = 574.85 : x
  2. Step 2: Convert to fraction form
    924.23/1,275.78 = 574.85/x
  3. Step 3: Cross multiply
    924.23x = 1,275.78 × 574.85
  4. Step 4: Simplify right side
    924.23x = 733,372.88
  5. Step 5: Solve for x
    x = 733,372.88/924.23
  6. Step 6: Final answer
    x = 793.50

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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.