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Finding the Fourth Proportional to 1,432.52, 1,976.86 and 803.10

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Solution

The fourth proportional to 1,432.52, 1,976.86 and 803.10 is: 1,108.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.52 : 1,976.86 = 803.10 : x
  2. Step 2: Convert to fraction form
    1,432.52/1,976.86 = 803.10/x
  3. Step 3: Cross multiply
    1,432.52x = 1,976.86 × 803.10
  4. Step 4: Simplify right side
    1,432.52x = 1,587,616.27
  5. Step 5: Solve for x
    x = 1,587,616.27/1,432.52
  6. Step 6: Final answer
    x = 1,108.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.