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Finding the Fourth Proportional to 79,234.38, 109,345.98 and 43,426.59

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Solution

The fourth proportional to 79,234.38, 109,345.98 and 43,426.59 is: 59,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,234.38 : 109,345.98 = 43,426.59 : x
  2. Step 2: Convert to fraction form
    79,234.38/109,345.98 = 43,426.59/x
  3. Step 3: Cross multiply
    79,234.38x = 109,345.98 × 43,426.59
  4. Step 4: Simplify right side
    79,234.38x = 4,748,523,041.61
  5. Step 5: Solve for x
    x = 4,748,523,041.61/79,234.38
  6. Step 6: Final answer
    x = 59,930.08

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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.