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Finding the Fourth Proportional to 79,476.72, 109,774.92 and 59,422.68

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Solution

The fourth proportional to 79,476.72, 109,774.92 and 59,422.68 is: 82,075.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,476.72 : 109,774.92 = 59,422.68 : x
  2. Step 2: Convert to fraction form
    79,476.72/109,774.92 = 59,422.68/x
  3. Step 3: Cross multiply
    79,476.72x = 109,774.92 × 59,422.68
  4. Step 4: Simplify right side
    79,476.72x = 6,523,119,943.19
  5. Step 5: Solve for x
    x = 6,523,119,943.19/79,476.72
  6. Step 6: Final answer
    x = 82,075.86

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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.