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Finding the Fourth Proportional to 79,374.84, 109,573.74 and 47,107.32

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Solution

The fourth proportional to 79,374.84, 109,573.74 and 47,107.32 is: 65,029.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,374.84 : 109,573.74 = 47,107.32 : x
  2. Step 2: Convert to fraction form
    79,374.84/109,573.74 = 47,107.32/x
  3. Step 3: Cross multiply
    79,374.84x = 109,573.74 × 47,107.32
  4. Step 4: Simplify right side
    79,374.84x = 5,161,725,233.78
  5. Step 5: Solve for x
    x = 5,161,725,233.78/79,374.84
  6. Step 6: Final answer
    x = 65,029.74

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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.