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Finding the Fourth Proportional to 2,979.14, 4,468.64 and 788.02

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Solution

The fourth proportional to 2,979.14, 4,468.64 and 788.02 is: 1,182.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.14 : 4,468.64 = 788.02 : x
  2. Step 2: Convert to fraction form
    2,979.14/4,468.64 = 788.02/x
  3. Step 3: Cross multiply
    2,979.14x = 4,468.64 × 788.02
  4. Step 4: Simplify right side
    2,979.14x = 3,521,362.58
  5. Step 5: Solve for x
    x = 3,521,362.58/2,979.14
  6. Step 6: Final answer
    x = 1,182.01

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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.