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Finding the Fourth Proportional to 1,796.13, 2,478.66 and 999.45

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Solution

The fourth proportional to 1,796.13, 2,478.66 and 999.45 is: 1,379.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,796.13 : 2,478.66 = 999.45 : x
  2. Step 2: Convert to fraction form
    1,796.13/2,478.66 = 999.45/x
  3. Step 3: Cross multiply
    1,796.13x = 2,478.66 × 999.45
  4. Step 4: Simplify right side
    1,796.13x = 2,477,296.74
  5. Step 5: Solve for x
    x = 2,477,296.74/1,796.13
  6. Step 6: Final answer
    x = 1,379.24

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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.