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Finding the Fourth Proportional to 79,182.48, 109,271.84 and 43,373.78

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Solution

The fourth proportional to 79,182.48, 109,271.84 and 43,373.78 is: 59,855.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,182.48 : 109,271.84 = 43,373.78 : x
  2. Step 2: Convert to fraction form
    79,182.48/109,271.84 = 43,373.78/x
  3. Step 3: Cross multiply
    79,182.48x = 109,271.84 × 43,373.78
  4. Step 4: Simplify right side
    79,182.48x = 4,739,531,985.13
  5. Step 5: Solve for x
    x = 4,739,531,985.13/79,182.48
  6. Step 6: Final answer
    x = 59,855.82

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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.