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Finding the Fourth Proportional to 52,784.91, 79,189.77 and 15,345.81

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Solution

The fourth proportional to 52,784.91, 79,189.77 and 15,345.81 is: 23,022.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,784.91 : 79,189.77 = 15,345.81 : x
  2. Step 2: Convert to fraction form
    52,784.91/79,189.77 = 15,345.81/x
  3. Step 3: Cross multiply
    52,784.91x = 79,189.77 × 15,345.81
  4. Step 4: Simplify right side
    52,784.91x = 1,215,231,164.36
  5. Step 5: Solve for x
    x = 1,215,231,164.36/52,784.91
  6. Step 6: Final answer
    x = 23,022.32

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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.