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Finding the Fourth Proportional to 73,197.83, 109,718.97 and 28,818.47

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Solution

The fourth proportional to 73,197.83, 109,718.97 and 28,818.47 is: 43,197.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,197.83 : 109,718.97 = 28,818.47 : x
  2. Step 2: Convert to fraction form
    73,197.83/109,718.97 = 28,818.47/x
  3. Step 3: Cross multiply
    73,197.83x = 109,718.97 × 28,818.47
  4. Step 4: Simplify right side
    73,197.83x = 3,161,932,845.38
  5. Step 5: Solve for x
    x = 3,161,932,845.38/73,197.83
  6. Step 6: Final answer
    x = 43,197.08

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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.