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Finding the Fourth Proportional to 925.79, 1,390.93 and 596.89

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Solution

The fourth proportional to 925.79, 1,390.93 and 596.89 is: 896.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.79 : 1,390.93 = 596.89 : x
  2. Step 2: Convert to fraction form
    925.79/1,390.93 = 596.89/x
  3. Step 3: Cross multiply
    925.79x = 1,390.93 × 596.89
  4. Step 4: Simplify right side
    925.79x = 830,226.75
  5. Step 5: Solve for x
    x = 830,226.75/925.79
  6. Step 6: Final answer
    x = 896.78

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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.