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Finding the Fourth Proportional to 79,470.86, 109,671.72 and 43,663.19

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Solution

The fourth proportional to 79,470.86, 109,671.72 and 43,663.19 is: 60,256.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,470.86 : 109,671.72 = 43,663.19 : x
  2. Step 2: Convert to fraction form
    79,470.86/109,671.72 = 43,663.19/x
  3. Step 3: Cross multiply
    79,470.86x = 109,671.72 × 43,663.19
  4. Step 4: Simplify right side
    79,470.86x = 4,788,617,147.99
  5. Step 5: Solve for x
    x = 4,788,617,147.99/79,470.86
  6. Step 6: Final answer
    x = 60,256.26

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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.