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Finding the Fourth Proportional to 1,052.01, 1,576.78 and 434.92

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Solution

The fourth proportional to 1,052.01, 1,576.78 and 434.92 is: 651.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.01 : 1,576.78 = 434.92 : x
  2. Step 2: Convert to fraction form
    1,052.01/1,576.78 = 434.92/x
  3. Step 3: Cross multiply
    1,052.01x = 1,576.78 × 434.92
  4. Step 4: Simplify right side
    1,052.01x = 685,773.16
  5. Step 5: Solve for x
    x = 685,773.16/1,052.01
  6. Step 6: Final answer
    x = 651.87

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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.