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Finding the Fourth Proportional to 79,124.94, 109,182.74 and 63,033.24

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Solution

The fourth proportional to 79,124.94, 109,182.74 and 63,033.24 is: 86,978.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,124.94 : 109,182.74 = 63,033.24 : x
  2. Step 2: Convert to fraction form
    79,124.94/109,182.74 = 63,033.24/x
  3. Step 3: Cross multiply
    79,124.94x = 109,182.74 × 63,033.24
  4. Step 4: Simplify right side
    79,124.94x = 6,882,141,539.11
  5. Step 5: Solve for x
    x = 6,882,141,539.11/79,124.94
  6. Step 6: Final answer
    x = 86,978.16

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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.