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Finding the Fourth Proportional to 1,456.20, 2,009.56 and 793.05

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Solution

The fourth proportional to 1,456.20, 2,009.56 and 793.05 is: 1,094.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456.20 : 2,009.56 = 793.05 : x
  2. Step 2: Convert to fraction form
    1,456.20/2,009.56 = 793.05/x
  3. Step 3: Cross multiply
    1,456.20x = 2,009.56 × 793.05
  4. Step 4: Simplify right side
    1,456.20x = 1,593,681.56
  5. Step 5: Solve for x
    x = 1,593,681.56/1,456.20
  6. Step 6: Final answer
    x = 1,094.41

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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.