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Finding the Fourth Proportional to 2,432.70, 3,650.94 and 972.81

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Solution

The fourth proportional to 2,432.70, 3,650.94 and 972.81 is: 1,459.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,432.70 : 3,650.94 = 972.81 : x
  2. Step 2: Convert to fraction form
    2,432.70/3,650.94 = 972.81/x
  3. Step 3: Cross multiply
    2,432.70x = 3,650.94 × 972.81
  4. Step 4: Simplify right side
    2,432.70x = 3,551,670.94
  5. Step 5: Solve for x
    x = 3,551,670.94/2,432.70
  6. Step 6: Final answer
    x = 1,459.97

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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.